HDFS-2636. Implement protobuf service for ClientDatanodeProtocol. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1211249 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -19,6 +19,8 @@ Trunk (unreleased changes)
 
     HDFS-2629. Implement protobuf service for InterDatanodeProtocol. (suresh)
 
+    HDFS-2636. Implement protobuf service for ClientDatanodeProtocol. (suresh)
+
   IMPROVEMENTS
 
     HADOOP-7524 Change RPC to allow multiple protocols including multuple 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/BlockLocalPathInfo.java

@@ -66,6 +66,11 @@ public class BlockLocalPathInfo implements Writable {
    */
   public String getBlockPath() {return localBlockPath;}
   
+  /**
+   * @return the Block
+   */
+  public ExtendedBlock getBlock() { return block;}
+  
   /**
    * Get the Block metadata file.
    * @return Block metadata file.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/proto/ClientDatanodeProtocolProtos.java

@@ -0,0 +1,4162 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: ClientDatanodeProtocol.proto
+
+package org.apache.hadoop.hdfs.protocol.proto;
+
+public final class ClientDatanodeProtocolProtos {
+  private ClientDatanodeProtocolProtos() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+  }
+  public interface GetReplicaVisibleLengthRequestProtoOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+    
+    // required .ExtendedBlockProto block = 1;
+    boolean hasBlock();
+    org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto getBlock();
+    org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder getBlockOrBuilder();
+  }
+  public static final class GetReplicaVisibleLengthRequestProto extends
+      com.google.protobuf.GeneratedMessage
+      implements GetReplicaVisibleLengthRequestProtoOrBuilder {
+    // Use GetReplicaVisibleLengthRequestProto.newBuilder() to construct.
+    private GetReplicaVisibleLengthRequestProto(Builder builder) {
+      super(builder);
+    }
+    private GetReplicaVisibleLengthRequestProto(boolean noInit) {}
+    
+    private static final GetReplicaVisibleLengthRequestProto defaultInstance;
+    public static GetReplicaVisibleLengthRequestProto getDefaultInstance() {
+      return defaultInstance;
+    }
+    
+    public GetReplicaVisibleLengthRequestProto getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+    
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetReplicaVisibleLengthRequestProto_descriptor;
+    }
+    
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
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+    
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+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      Builder builder = newBuilder();
+      if (builder.mergeDelimitedFrom(input)) {
+        return builder.buildParsed();
+      } else {
+        return null;
+      }
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+      if (builder.mergeDelimitedFrom(input, extensionRegistry)) {
+        return builder.buildParsed();
+      } else {
+        return null;
+      }
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input, extensionRegistry)
+               .buildParsed();
+    }
+    
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+    
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProtoOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetReplicaVisibleLengthRequestProto_descriptor;
+      }
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+      private Builder() {
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+          getDescriptorForType() {
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+      
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+      
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+        if (!result.isInitialized()) {
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+                onChanged();
+                return this;
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+      private org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
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+                  getParentForChildren(),
+                  isClean());
+          block_ = null;
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+    }
+    
+    static {
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+      defaultInstance.initFields();
+    }
+    
+    // @@protoc_insertion_point(class_scope:GetReplicaVisibleLengthRequestProto)
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+  
+  public interface GetReplicaVisibleLengthResponseProtoOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+    
+    // required uint64 length = 1;
+    boolean hasLength();
+    long getLength();
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+  public static final class GetReplicaVisibleLengthResponseProto extends
+      com.google.protobuf.GeneratedMessage
+      implements GetReplicaVisibleLengthResponseProtoOrBuilder {
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+    private GetReplicaVisibleLengthResponseProto(Builder builder) {
+      super(builder);
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
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+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
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+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
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+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input, extensionRegistry)
+               .buildParsed();
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+        throws java.io.IOException {
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+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
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+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto prototype) {
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+    protected Builder newBuilderForType(
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+          throws com.google.protobuf.InvalidProtocolBufferException {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto result = buildPartial();
+        if (!result.isInitialized()) {
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+            result).asInvalidProtocolBufferException();
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+        return result;
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+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto result = new org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto(this);
+        onBuilt();
+        return result;
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+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto) {
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+          return this;
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+      public Builder mergeFrom(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto other) {
+        if (other == org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance()) return this;
+        this.mergeUnknownFields(other.getUnknownFields());
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+      public Builder mergeFrom(
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+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
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+      return newBuilder().mergeFrom(input).buildParsed();
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+               .buildParsed();
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+        throws java.io.IOException {
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
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+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+              break;
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+        throws com.google.protobuf.InvalidProtocolBufferException {
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+               .buildParsed();
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+        throws com.google.protobuf.InvalidProtocolBufferException {
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+        throws java.io.IOException {
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
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+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto prototype) {
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+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
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+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto result = buildPartial();
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+    org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProtoOrBuilder getTokenOrBuilder();
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+    private GetBlockLocalPathInfoRequestProto(Builder builder) {
+      super(builder);
+    }
+    private GetBlockLocalPathInfoRequestProto(boolean noInit) {}
+    
+    private static final GetBlockLocalPathInfoRequestProto defaultInstance;
+    public static GetBlockLocalPathInfoRequestProto getDefaultInstance() {
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+    
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+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
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+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
+               .buildParsed();
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+      return newBuilder().mergeFrom(data).buildParsed();
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProtoOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoRequestProto_descriptor;
+      }
+      
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoRequestProto_fieldAccessorTable;
+      }
+      
+      // Construct using org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+      
+      private Builder(BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getBlockFieldBuilder();
+          getTokenFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+      
+      public Builder clear() {
+        super.clear();
+        if (blockBuilder_ == null) {
+          block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+        } else {
+          blockBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        if (tokenBuilder_ == null) {
+          token_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.getDefaultInstance();
+        } else {
+          tokenBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+      
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+      
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.getDescriptor();
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto getDefaultInstanceForType() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.getDefaultInstance();
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto build() {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+      
+      private org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto buildParsed()
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(
+            result).asInvalidProtocolBufferException();
+        }
+        return result;
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto buildPartial() {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto result = new org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (blockBuilder_ == null) {
+          result.block_ = block_;
+        } else {
+          result.block_ = blockBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        if (tokenBuilder_ == null) {
+          result.token_ = token_;
+        } else {
+          result.token_ = tokenBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+      
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto) {
+          return mergeFrom((org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+      
+      public Builder mergeFrom(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto other) {
+        if (other == org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.getDefaultInstance()) return this;
+        if (other.hasBlock()) {
+          mergeBlock(other.getBlock());
+        }
+        if (other.hasToken()) {
+          mergeToken(other.getToken());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+      
+      public final boolean isInitialized() {
+        if (!hasBlock()) {
+          
+          return false;
+        }
+        if (!hasToken()) {
+          
+          return false;
+        }
+        if (!getBlock().isInitialized()) {
+          
+          return false;
+        }
+        if (!getToken().isInitialized()) {
+          
+          return false;
+        }
+        return true;
+      }
+      
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder(
+            this.getUnknownFields());
+        while (true) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              this.setUnknownFields(unknownFields.build());
+              onChanged();
+              return this;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                this.setUnknownFields(unknownFields.build());
+                onChanged();
+                return this;
+              }
+              break;
+            }
+            case 10: {
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder subBuilder = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.newBuilder();
+              if (hasBlock()) {
+                subBuilder.mergeFrom(getBlock());
+              }
+              input.readMessage(subBuilder, extensionRegistry);
+              setBlock(subBuilder.buildPartial());
+              break;
+            }
+            case 18: {
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder subBuilder = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.newBuilder();
+              if (hasToken()) {
+                subBuilder.mergeFrom(getToken());
+              }
+              input.readMessage(subBuilder, extensionRegistry);
+              setToken(subBuilder.buildPartial());
+              break;
+            }
+          }
+        }
+      }
+      
+      private int bitField0_;
+      
+      // required .ExtendedBlockProto block = 1;
+      private org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder> blockBuilder_;
+      public boolean hasBlock() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto getBlock() {
+        if (blockBuilder_ == null) {
+          return block_;
+        } else {
+          return blockBuilder_.getMessage();
+        }
+      }
+      public Builder setBlock(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto value) {
+        if (blockBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          block_ = value;
+          onChanged();
+        } else {
+          blockBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder setBlock(
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder builderForValue) {
+        if (blockBuilder_ == null) {
+          block_ = builderForValue.build();
+          onChanged();
+        } else {
+          blockBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder mergeBlock(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto value) {
+        if (blockBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              block_ != org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance()) {
+            block_ =
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.newBuilder(block_).mergeFrom(value).buildPartial();
+          } else {
+            block_ = value;
+          }
+          onChanged();
+        } else {
+          blockBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder clearBlock() {
+        if (blockBuilder_ == null) {
+          block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+          onChanged();
+        } else {
+          blockBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder getBlockBuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getBlockFieldBuilder().getBuilder();
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder getBlockOrBuilder() {
+        if (blockBuilder_ != null) {
+          return blockBuilder_.getMessageOrBuilder();
+        } else {
+          return block_;
+        }
+      }
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder> 
+          getBlockFieldBuilder() {
+        if (blockBuilder_ == null) {
+          blockBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder>(
+                  block_,
+                  getParentForChildren(),
+                  isClean());
+          block_ = null;
+        }
+        return blockBuilder_;
+      }
+      
+      // required .BlockTokenIdentifierProto token = 2;
+      private org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto token_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProtoOrBuilder> tokenBuilder_;
+      public boolean hasToken() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto getToken() {
+        if (tokenBuilder_ == null) {
+          return token_;
+        } else {
+          return tokenBuilder_.getMessage();
+        }
+      }
+      public Builder setToken(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto value) {
+        if (tokenBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          token_ = value;
+          onChanged();
+        } else {
+          tokenBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      public Builder setToken(
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder builderForValue) {
+        if (tokenBuilder_ == null) {
+          token_ = builderForValue.build();
+          onChanged();
+        } else {
+          tokenBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      public Builder mergeToken(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto value) {
+        if (tokenBuilder_ == null) {
+          if (((bitField0_ & 0x00000002) == 0x00000002) &&
+              token_ != org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.getDefaultInstance()) {
+            token_ =
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.newBuilder(token_).mergeFrom(value).buildPartial();
+          } else {
+            token_ = value;
+          }
+          onChanged();
+        } else {
+          tokenBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      public Builder clearToken() {
+        if (tokenBuilder_ == null) {
+          token_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.getDefaultInstance();
+          onChanged();
+        } else {
+          tokenBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder getTokenBuilder() {
+        bitField0_ |= 0x00000002;
+        onChanged();
+        return getTokenFieldBuilder().getBuilder();
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProtoOrBuilder getTokenOrBuilder() {
+        if (tokenBuilder_ != null) {
+          return tokenBuilder_.getMessageOrBuilder();
+        } else {
+          return token_;
+        }
+      }
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProtoOrBuilder> 
+          getTokenFieldBuilder() {
+        if (tokenBuilder_ == null) {
+          tokenBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProtoOrBuilder>(
+                  token_,
+                  getParentForChildren(),
+                  isClean());
+          token_ = null;
+        }
+        return tokenBuilder_;
+      }
+      
+      // @@protoc_insertion_point(builder_scope:GetBlockLocalPathInfoRequestProto)
+    }
+    
+    static {
+      defaultInstance = new GetBlockLocalPathInfoRequestProto(true);
+      defaultInstance.initFields();
+    }
+    
+    // @@protoc_insertion_point(class_scope:GetBlockLocalPathInfoRequestProto)
+  }
+  
+  public interface GetBlockLocalPathInfoResponseProtoOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+    
+    // required .ExtendedBlockProto block = 1;
+    boolean hasBlock();
+    org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto getBlock();
+    org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder getBlockOrBuilder();
+    
+    // required string localPath = 2;
+    boolean hasLocalPath();
+    String getLocalPath();
+    
+    // required string localMetaPath = 3;
+    boolean hasLocalMetaPath();
+    String getLocalMetaPath();
+  }
+  public static final class GetBlockLocalPathInfoResponseProto extends
+      com.google.protobuf.GeneratedMessage
+      implements GetBlockLocalPathInfoResponseProtoOrBuilder {
+    // Use GetBlockLocalPathInfoResponseProto.newBuilder() to construct.
+    private GetBlockLocalPathInfoResponseProto(Builder builder) {
+      super(builder);
+    }
+    private GetBlockLocalPathInfoResponseProto(boolean noInit) {}
+    
+    private static final GetBlockLocalPathInfoResponseProto defaultInstance;
+    public static GetBlockLocalPathInfoResponseProto getDefaultInstance() {
+      return defaultInstance;
+    }
+    
+    public GetBlockLocalPathInfoResponseProto getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+    
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoResponseProto_descriptor;
+    }
+    
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoResponseProto_fieldAccessorTable;
+    }
+    
+    private int bitField0_;
+    // required .ExtendedBlockProto block = 1;
+    public static final int BLOCK_FIELD_NUMBER = 1;
+    private org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto block_;
+    public boolean hasBlock() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto getBlock() {
+      return block_;
+    }
+    public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder getBlockOrBuilder() {
+      return block_;
+    }
+    
+    // required string localPath = 2;
+    public static final int LOCALPATH_FIELD_NUMBER = 2;
+    private java.lang.Object localPath_;
+    public boolean hasLocalPath() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    public String getLocalPath() {
+      java.lang.Object ref = localPath_;
+      if (ref instanceof String) {
+        return (String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        String s = bs.toStringUtf8();
+        if (com.google.protobuf.Internal.isValidUtf8(bs)) {
+          localPath_ = s;
+        }
+        return s;
+      }
+    }
+    private com.google.protobuf.ByteString getLocalPathBytes() {
+      java.lang.Object ref = localPath_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8((String) ref);
+        localPath_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    
+    // required string localMetaPath = 3;
+    public static final int LOCALMETAPATH_FIELD_NUMBER = 3;
+    private java.lang.Object localMetaPath_;
+    public boolean hasLocalMetaPath() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    public String getLocalMetaPath() {
+      java.lang.Object ref = localMetaPath_;
+      if (ref instanceof String) {
+        return (String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        String s = bs.toStringUtf8();
+        if (com.google.protobuf.Internal.isValidUtf8(bs)) {
+          localMetaPath_ = s;
+        }
+        return s;
+      }
+    }
+    private com.google.protobuf.ByteString getLocalMetaPathBytes() {
+      java.lang.Object ref = localMetaPath_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8((String) ref);
+        localMetaPath_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    
+    private void initFields() {
+      block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+      localPath_ = "";
+      localMetaPath_ = "";
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+      
+      if (!hasBlock()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasLocalPath()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasLocalMetaPath()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!getBlock().isInitialized()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      memoizedIsInitialized = 1;
+      return true;
+    }
+    
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeMessage(1, block_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeBytes(2, getLocalPathBytes());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeBytes(3, getLocalMetaPathBytes());
+      }
+      getUnknownFields().writeTo(output);
+    }
+    
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+    
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(1, block_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, getLocalPathBytes());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(3, getLocalMetaPathBytes());
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+    
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+    
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto)) {
+        return super.equals(obj);
+      }
+      org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto other = (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto) obj;
+      
+      boolean result = true;
+      result = result && (hasBlock() == other.hasBlock());
+      if (hasBlock()) {
+        result = result && getBlock()
+            .equals(other.getBlock());
+      }
+      result = result && (hasLocalPath() == other.hasLocalPath());
+      if (hasLocalPath()) {
+        result = result && getLocalPath()
+            .equals(other.getLocalPath());
+      }
+      result = result && (hasLocalMetaPath() == other.hasLocalMetaPath());
+      if (hasLocalMetaPath()) {
+        result = result && getLocalMetaPath()
+            .equals(other.getLocalMetaPath());
+      }
+      result = result &&
+          getUnknownFields().equals(other.getUnknownFields());
+      return result;
+    }
+    
+    @java.lang.Override
+    public int hashCode() {
+      int hash = 41;
+      hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasBlock()) {
+        hash = (37 * hash) + BLOCK_FIELD_NUMBER;
+        hash = (53 * hash) + getBlock().hashCode();
+      }
+      if (hasLocalPath()) {
+        hash = (37 * hash) + LOCALPATH_FIELD_NUMBER;
+        hash = (53 * hash) + getLocalPath().hashCode();
+      }
+      if (hasLocalMetaPath()) {
+        hash = (37 * hash) + LOCALMETAPATH_FIELD_NUMBER;
+        hash = (53 * hash) + getLocalMetaPath().hashCode();
+      }
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      return hash;
+    }
+    
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return newBuilder().mergeFrom(data, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input, extensionRegistry)
+               .buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      Builder builder = newBuilder();
+      if (builder.mergeDelimitedFrom(input)) {
+        return builder.buildParsed();
+      } else {
+        return null;
+      }
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      Builder builder = newBuilder();
+      if (builder.mergeDelimitedFrom(input, extensionRegistry)) {
+        return builder.buildParsed();
+      } else {
+        return null;
+      }
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input).buildParsed();
+    }
+    public static org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return newBuilder().mergeFrom(input, extensionRegistry)
+               .buildParsed();
+    }
+    
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+    
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProtoOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoResponseProto_descriptor;
+      }
+      
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.internal_static_GetBlockLocalPathInfoResponseProto_fieldAccessorTable;
+      }
+      
+      // Construct using org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+      
+      private Builder(BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getBlockFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+      
+      public Builder clear() {
+        super.clear();
+        if (blockBuilder_ == null) {
+          block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+        } else {
+          blockBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        localPath_ = "";
+        bitField0_ = (bitField0_ & ~0x00000002);
+        localMetaPath_ = "";
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+      
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+      
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDescriptor();
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto getDefaultInstanceForType() {
+        return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance();
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto build() {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+      
+      private org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto buildParsed()
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(
+            result).asInvalidProtocolBufferException();
+        }
+        return result;
+      }
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto buildPartial() {
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto result = new org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (blockBuilder_ == null) {
+          result.block_ = block_;
+        } else {
+          result.block_ = blockBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.localPath_ = localPath_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.localMetaPath_ = localMetaPath_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+      
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto) {
+          return mergeFrom((org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+      
+      public Builder mergeFrom(org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto other) {
+        if (other == org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance()) return this;
+        if (other.hasBlock()) {
+          mergeBlock(other.getBlock());
+        }
+        if (other.hasLocalPath()) {
+          setLocalPath(other.getLocalPath());
+        }
+        if (other.hasLocalMetaPath()) {
+          setLocalMetaPath(other.getLocalMetaPath());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+      
+      public final boolean isInitialized() {
+        if (!hasBlock()) {
+          
+          return false;
+        }
+        if (!hasLocalPath()) {
+          
+          return false;
+        }
+        if (!hasLocalMetaPath()) {
+          
+          return false;
+        }
+        if (!getBlock().isInitialized()) {
+          
+          return false;
+        }
+        return true;
+      }
+      
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder(
+            this.getUnknownFields());
+        while (true) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              this.setUnknownFields(unknownFields.build());
+              onChanged();
+              return this;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                this.setUnknownFields(unknownFields.build());
+                onChanged();
+                return this;
+              }
+              break;
+            }
+            case 10: {
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder subBuilder = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.newBuilder();
+              if (hasBlock()) {
+                subBuilder.mergeFrom(getBlock());
+              }
+              input.readMessage(subBuilder, extensionRegistry);
+              setBlock(subBuilder.buildPartial());
+              break;
+            }
+            case 18: {
+              bitField0_ |= 0x00000002;
+              localPath_ = input.readBytes();
+              break;
+            }
+            case 26: {
+              bitField0_ |= 0x00000004;
+              localMetaPath_ = input.readBytes();
+              break;
+            }
+          }
+        }
+      }
+      
+      private int bitField0_;
+      
+      // required .ExtendedBlockProto block = 1;
+      private org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder> blockBuilder_;
+      public boolean hasBlock() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto getBlock() {
+        if (blockBuilder_ == null) {
+          return block_;
+        } else {
+          return blockBuilder_.getMessage();
+        }
+      }
+      public Builder setBlock(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto value) {
+        if (blockBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          block_ = value;
+          onChanged();
+        } else {
+          blockBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder setBlock(
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder builderForValue) {
+        if (blockBuilder_ == null) {
+          block_ = builderForValue.build();
+          onChanged();
+        } else {
+          blockBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder mergeBlock(org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto value) {
+        if (blockBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              block_ != org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance()) {
+            block_ =
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.newBuilder(block_).mergeFrom(value).buildPartial();
+          } else {
+            block_ = value;
+          }
+          onChanged();
+        } else {
+          blockBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      public Builder clearBlock() {
+        if (blockBuilder_ == null) {
+          block_ = org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.getDefaultInstance();
+          onChanged();
+        } else {
+          blockBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder getBlockBuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getBlockFieldBuilder().getBuilder();
+      }
+      public org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder getBlockOrBuilder() {
+        if (blockBuilder_ != null) {
+          return blockBuilder_.getMessageOrBuilder();
+        } else {
+          return block_;
+        }
+      }
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder> 
+          getBlockFieldBuilder() {
+        if (blockBuilder_ == null) {
+          blockBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProto.Builder, org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ExtendedBlockProtoOrBuilder>(
+                  block_,
+                  getParentForChildren(),
+                  isClean());
+          block_ = null;
+        }
+        return blockBuilder_;
+      }
+      
+      // required string localPath = 2;
+      private java.lang.Object localPath_ = "";
+      public boolean hasLocalPath() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      public String getLocalPath() {
+        java.lang.Object ref = localPath_;
+        if (!(ref instanceof String)) {
+          String s = ((com.google.protobuf.ByteString) ref).toStringUtf8();
+          localPath_ = s;
+          return s;
+        } else {
+          return (String) ref;
+        }
+      }
+      public Builder setLocalPath(String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        localPath_ = value;
+        onChanged();
+        return this;
+      }
+      public Builder clearLocalPath() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        localPath_ = getDefaultInstance().getLocalPath();
+        onChanged();
+        return this;
+      }
+      void setLocalPath(com.google.protobuf.ByteString value) {
+        bitField0_ |= 0x00000002;
+        localPath_ = value;
+        onChanged();
+      }
+      
+      // required string localMetaPath = 3;
+      private java.lang.Object localMetaPath_ = "";
+      public boolean hasLocalMetaPath() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      public String getLocalMetaPath() {
+        java.lang.Object ref = localMetaPath_;
+        if (!(ref instanceof String)) {
+          String s = ((com.google.protobuf.ByteString) ref).toStringUtf8();
+          localMetaPath_ = s;
+          return s;
+        } else {
+          return (String) ref;
+        }
+      }
+      public Builder setLocalMetaPath(String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000004;
+        localMetaPath_ = value;
+        onChanged();
+        return this;
+      }
+      public Builder clearLocalMetaPath() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        localMetaPath_ = getDefaultInstance().getLocalMetaPath();
+        onChanged();
+        return this;
+      }
+      void setLocalMetaPath(com.google.protobuf.ByteString value) {
+        bitField0_ |= 0x00000004;
+        localMetaPath_ = value;
+        onChanged();
+      }
+      
+      // @@protoc_insertion_point(builder_scope:GetBlockLocalPathInfoResponseProto)
+    }
+    
+    static {
+      defaultInstance = new GetBlockLocalPathInfoResponseProto(true);
+      defaultInstance.initFields();
+    }
+    
+    // @@protoc_insertion_point(class_scope:GetBlockLocalPathInfoResponseProto)
+  }
+  
+  public static abstract class ClientDatanodeProtocolService
+      implements com.google.protobuf.Service {
+    protected ClientDatanodeProtocolService() {}
+    
+    public interface Interface {
+      public abstract void getReplicaVisibleLength(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto> done);
+      
+      public abstract void refreshNamenode(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto> done);
+      
+      public abstract void deleteBlockPool(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto> done);
+      
+      public abstract void getBlockLocalPathInfo(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto> done);
+      
+    }
+    
+    public static com.google.protobuf.Service newReflectiveService(
+        final Interface impl) {
+      return new ClientDatanodeProtocolService() {
+        @java.lang.Override
+        public  void getReplicaVisibleLength(
+            com.google.protobuf.RpcController controller,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request,
+            com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto> done) {
+          impl.getReplicaVisibleLength(controller, request, done);
+        }
+        
+        @java.lang.Override
+        public  void refreshNamenode(
+            com.google.protobuf.RpcController controller,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request,
+            com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto> done) {
+          impl.refreshNamenode(controller, request, done);
+        }
+        
+        @java.lang.Override
+        public  void deleteBlockPool(
+            com.google.protobuf.RpcController controller,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request,
+            com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto> done) {
+          impl.deleteBlockPool(controller, request, done);
+        }
+        
+        @java.lang.Override
+        public  void getBlockLocalPathInfo(
+            com.google.protobuf.RpcController controller,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request,
+            com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto> done) {
+          impl.getBlockLocalPathInfo(controller, request, done);
+        }
+        
+      };
+    }
+    
+    public static com.google.protobuf.BlockingService
+        newReflectiveBlockingService(final BlockingInterface impl) {
+      return new com.google.protobuf.BlockingService() {
+        public final com.google.protobuf.Descriptors.ServiceDescriptor
+            getDescriptorForType() {
+          return getDescriptor();
+        }
+        
+        public final com.google.protobuf.Message callBlockingMethod(
+            com.google.protobuf.Descriptors.MethodDescriptor method,
+            com.google.protobuf.RpcController controller,
+            com.google.protobuf.Message request)
+            throws com.google.protobuf.ServiceException {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.callBlockingMethod() given method descriptor for " +
+              "wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return impl.getReplicaVisibleLength(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto)request);
+            case 1:
+              return impl.refreshNamenode(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto)request);
+            case 2:
+              return impl.deleteBlockPool(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto)request);
+            case 3:
+              return impl.getBlockLocalPathInfo(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto)request);
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+        
+        public final com.google.protobuf.Message
+            getRequestPrototype(
+            com.google.protobuf.Descriptors.MethodDescriptor method) {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.getRequestPrototype() given method " +
+              "descriptor for wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto.getDefaultInstance();
+            case 1:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto.getDefaultInstance();
+            case 2:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto.getDefaultInstance();
+            case 3:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.getDefaultInstance();
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+        
+        public final com.google.protobuf.Message
+            getResponsePrototype(
+            com.google.protobuf.Descriptors.MethodDescriptor method) {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.getResponsePrototype() given method " +
+              "descriptor for wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.getDefaultInstance();
+            case 1:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance();
+            case 2:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.getDefaultInstance();
+            case 3:
+              return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance();
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+        
+      };
+    }
+    
+    public abstract void getReplicaVisibleLength(
+        com.google.protobuf.RpcController controller,
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request,
+        com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto> done);
+    
+    public abstract void refreshNamenode(
+        com.google.protobuf.RpcController controller,
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request,
+        com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto> done);
+    
+    public abstract void deleteBlockPool(
+        com.google.protobuf.RpcController controller,
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request,
+        com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto> done);
+    
+    public abstract void getBlockLocalPathInfo(
+        com.google.protobuf.RpcController controller,
+        org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request,
+        com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto> done);
+    
+    public static final
+        com.google.protobuf.Descriptors.ServiceDescriptor
+        getDescriptor() {
+      return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.getDescriptor().getServices().get(0);
+    }
+    public final com.google.protobuf.Descriptors.ServiceDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    
+    public final void callMethod(
+        com.google.protobuf.Descriptors.MethodDescriptor method,
+        com.google.protobuf.RpcController controller,
+        com.google.protobuf.Message request,
+        com.google.protobuf.RpcCallback<
+          com.google.protobuf.Message> done) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.callMethod() given method descriptor for wrong " +
+          "service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          this.getReplicaVisibleLength(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto)request,
+            com.google.protobuf.RpcUtil.<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto>specializeCallback(
+              done));
+          return;
+        case 1:
+          this.refreshNamenode(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto)request,
+            com.google.protobuf.RpcUtil.<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto>specializeCallback(
+              done));
+          return;
+        case 2:
+          this.deleteBlockPool(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto)request,
+            com.google.protobuf.RpcUtil.<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto>specializeCallback(
+              done));
+          return;
+        case 3:
+          this.getBlockLocalPathInfo(controller, (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto)request,
+            com.google.protobuf.RpcUtil.<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto>specializeCallback(
+              done));
+          return;
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+    
+    public final com.google.protobuf.Message
+        getRequestPrototype(
+        com.google.protobuf.Descriptors.MethodDescriptor method) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.getRequestPrototype() given method " +
+          "descriptor for wrong service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto.getDefaultInstance();
+        case 1:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto.getDefaultInstance();
+        case 2:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto.getDefaultInstance();
+        case 3:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.getDefaultInstance();
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+    
+    public final com.google.protobuf.Message
+        getResponsePrototype(
+        com.google.protobuf.Descriptors.MethodDescriptor method) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.getResponsePrototype() given method " +
+          "descriptor for wrong service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.getDefaultInstance();
+        case 1:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance();
+        case 2:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.getDefaultInstance();
+        case 3:
+          return org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance();
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+    
+    public static Stub newStub(
+        com.google.protobuf.RpcChannel channel) {
+      return new Stub(channel);
+    }
+    
+    public static final class Stub extends org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ClientDatanodeProtocolService implements Interface {
+      private Stub(com.google.protobuf.RpcChannel channel) {
+        this.channel = channel;
+      }
+      
+      private final com.google.protobuf.RpcChannel channel;
+      
+      public com.google.protobuf.RpcChannel getChannel() {
+        return channel;
+      }
+      
+      public  void getReplicaVisibleLength(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto> done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(0),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.class,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.getDefaultInstance()));
+      }
+      
+      public  void refreshNamenode(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto> done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(1),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.class,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance()));
+      }
+      
+      public  void deleteBlockPool(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto> done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(2),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.class,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.getDefaultInstance()));
+      }
+      
+      public  void getBlockLocalPathInfo(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto> done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(3),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.class,
+            org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance()));
+      }
+    }
+    
+    public static BlockingInterface newBlockingStub(
+        com.google.protobuf.BlockingRpcChannel channel) {
+      return new BlockingStub(channel);
+    }
+    
+    public interface BlockingInterface {
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto getReplicaVisibleLength(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request)
+          throws com.google.protobuf.ServiceException;
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto refreshNamenode(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request)
+          throws com.google.protobuf.ServiceException;
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto deleteBlockPool(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request)
+          throws com.google.protobuf.ServiceException;
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto getBlockLocalPathInfo(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request)
+          throws com.google.protobuf.ServiceException;
+    }
+    
+    private static final class BlockingStub implements BlockingInterface {
+      private BlockingStub(com.google.protobuf.BlockingRpcChannel channel) {
+        this.channel = channel;
+      }
+      
+      private final com.google.protobuf.BlockingRpcChannel channel;
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto getReplicaVisibleLength(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto request)
+          throws com.google.protobuf.ServiceException {
+        return (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto) channel.callBlockingMethod(
+          getDescriptor().getMethods().get(0),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.getDefaultInstance());
+      }
+      
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto refreshNamenode(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto request)
+          throws com.google.protobuf.ServiceException {
+        return (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto) channel.callBlockingMethod(
+          getDescriptor().getMethods().get(1),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.getDefaultInstance());
+      }
+      
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto deleteBlockPool(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto request)
+          throws com.google.protobuf.ServiceException {
+        return (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto) channel.callBlockingMethod(
+          getDescriptor().getMethods().get(2),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.getDefaultInstance());
+      }
+      
+      
+      public org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto getBlockLocalPathInfo(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto request)
+          throws com.google.protobuf.ServiceException {
+        return (org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto) channel.callBlockingMethod(
+          getDescriptor().getMethods().get(3),
+          controller,
+          request,
+          org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.getDefaultInstance());
+      }
+      
+    }
+  }
+  
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_GetReplicaVisibleLengthRequestProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_GetReplicaVisibleLengthRequestProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_GetReplicaVisibleLengthResponseProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_GetReplicaVisibleLengthResponseProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_RefreshNamenodesRequestProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_RefreshNamenodesRequestProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_RefreshNamenodesResponseProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_RefreshNamenodesResponseProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_DeleteBlockPoolRequestProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_DeleteBlockPoolRequestProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_DeleteBlockPoolResponseProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_DeleteBlockPoolResponseProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_GetBlockLocalPathInfoRequestProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_GetBlockLocalPathInfoRequestProto_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_GetBlockLocalPathInfoResponseProto_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_GetBlockLocalPathInfoResponseProto_fieldAccessorTable;
+  
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\034ClientDatanodeProtocol.proto\032\nhdfs.pro" +
+      "to\"I\n#GetReplicaVisibleLengthRequestProt" +
+      "o\022\"\n\005block\030\001 \002(\0132\023.ExtendedBlockProto\"6\n" +
+      "$GetReplicaVisibleLengthResponseProto\022\016\n" +
+      "\006length\030\001 \002(\004\"\036\n\034RefreshNamenodesRequest" +
+      "Proto\"\037\n\035RefreshNamenodesResponseProto\"?" +
+      "\n\033DeleteBlockPoolRequestProto\022\021\n\tblockPo" +
+      "ol\030\001 \002(\t\022\r\n\005force\030\002 \002(\010\"\036\n\034DeleteBlockPo" +
+      "olResponseProto\"r\n!GetBlockLocalPathInfo" +
+      "RequestProto\022\"\n\005block\030\001 \002(\0132\023.ExtendedBl",
+      "ockProto\022)\n\005token\030\002 \002(\0132\032.BlockTokenIden" +
+      "tifierProto\"r\n\"GetBlockLocalPathInfoResp" +
+      "onseProto\022\"\n\005block\030\001 \002(\0132\023.ExtendedBlock" +
+      "Proto\022\021\n\tlocalPath\030\002 \002(\t\022\025\n\rlocalMetaPat" +
+      "h\030\003 \002(\t2\213\003\n\035ClientDatanodeProtocolServic" +
+      "e\022f\n\027getReplicaVisibleLength\022$.GetReplic" +
+      "aVisibleLengthRequestProto\032%.GetReplicaV" +
+      "isibleLengthResponseProto\022P\n\017refreshName" +
+      "node\022\035.RefreshNamenodesRequestProto\032\036.Re" +
+      "freshNamenodesResponseProto\022N\n\017deleteBlo",
+      "ckPool\022\034.DeleteBlockPoolRequestProto\032\035.D" +
+      "eleteBlockPoolResponseProto\022`\n\025getBlockL" +
+      "ocalPathInfo\022\".GetBlockLocalPathInfoRequ" +
+      "estProto\032#.GetBlockLocalPathInfoResponse" +
+      "ProtoBK\n%org.apache.hadoop.hdfs.protocol" +
+      ".protoB\034ClientDatanodeProtocolProtos\210\001\001\240" +
+      "\001\001"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+      new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
+        public com.google.protobuf.ExtensionRegistry assignDescriptors(
+            com.google.protobuf.Descriptors.FileDescriptor root) {
+          descriptor = root;
+          internal_static_GetReplicaVisibleLengthRequestProto_descriptor =
+            getDescriptor().getMessageTypes().get(0);
+          internal_static_GetReplicaVisibleLengthRequestProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_GetReplicaVisibleLengthRequestProto_descriptor,
+              new java.lang.String[] { "Block", },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto.Builder.class);
+          internal_static_GetReplicaVisibleLengthResponseProto_descriptor =
+            getDescriptor().getMessageTypes().get(1);
+          internal_static_GetReplicaVisibleLengthResponseProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_GetReplicaVisibleLengthResponseProto_descriptor,
+              new java.lang.String[] { "Length", },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto.Builder.class);
+          internal_static_RefreshNamenodesRequestProto_descriptor =
+            getDescriptor().getMessageTypes().get(2);
+          internal_static_RefreshNamenodesRequestProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_RefreshNamenodesRequestProto_descriptor,
+              new java.lang.String[] { },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto.Builder.class);
+          internal_static_RefreshNamenodesResponseProto_descriptor =
+            getDescriptor().getMessageTypes().get(3);
+          internal_static_RefreshNamenodesResponseProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_RefreshNamenodesResponseProto_descriptor,
+              new java.lang.String[] { },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto.Builder.class);
+          internal_static_DeleteBlockPoolRequestProto_descriptor =
+            getDescriptor().getMessageTypes().get(4);
+          internal_static_DeleteBlockPoolRequestProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_DeleteBlockPoolRequestProto_descriptor,
+              new java.lang.String[] { "BlockPool", "Force", },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto.Builder.class);
+          internal_static_DeleteBlockPoolResponseProto_descriptor =
+            getDescriptor().getMessageTypes().get(5);
+          internal_static_DeleteBlockPoolResponseProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_DeleteBlockPoolResponseProto_descriptor,
+              new java.lang.String[] { },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto.Builder.class);
+          internal_static_GetBlockLocalPathInfoRequestProto_descriptor =
+            getDescriptor().getMessageTypes().get(6);
+          internal_static_GetBlockLocalPathInfoRequestProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_GetBlockLocalPathInfoRequestProto_descriptor,
+              new java.lang.String[] { "Block", "Token", },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto.Builder.class);
+          internal_static_GetBlockLocalPathInfoResponseProto_descriptor =
+            getDescriptor().getMessageTypes().get(7);
+          internal_static_GetBlockLocalPathInfoResponseProto_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_GetBlockLocalPathInfoResponseProto_descriptor,
+              new java.lang.String[] { "Block", "LocalPath", "LocalMetaPath", },
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.class,
+              org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto.Builder.class);
+          return null;
+        }
+      };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+          org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.getDescriptor(),
+        }, assigner);
+  }
+  
+  // @@protoc_insertion_point(outer_class_scope)
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolPB.java

@@ -0,0 +1,49 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hdfs.protocolPB;
+
+import java.io.IOException;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.hdfs.DFSConfigKeys;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ClientDatanodeProtocolService;
+import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable;
+import org.apache.hadoop.hdfs.security.token.block.BlockTokenSelector;
+import org.apache.hadoop.ipc.ProtocolInfo;
+import org.apache.hadoop.ipc.VersionedProtocol;
+import org.apache.hadoop.security.KerberosInfo;
+import org.apache.hadoop.security.token.TokenInfo;
+
+@KerberosInfo(
+    serverPrincipal = DFSConfigKeys.DFS_DATANODE_USER_NAME_KEY)
+@TokenInfo(BlockTokenSelector.class)
+@ProtocolInfo(protocolName = 
+    "org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol",
+    protocolVersion = 1)
+@InterfaceAudience.Private
+public interface ClientDatanodeProtocolPB extends
+    ClientDatanodeProtocolService.BlockingInterface, VersionedProtocol {
+  
+  /**
+   * This method is defined to get the protocol signature using 
+   * ProtocolSignatureWritable - suffix of 2 to the method name
+   * avoids conflict.
+   */
+  public ProtocolSignatureWritable getProtocolSignature2(String protocol,
+      long clientVersion, int clientMethodsHash) throws IOException;
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolServerSideTranslatorPB.java

@@ -0,0 +1,159 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hdfs.protocolPB;
+
+import java.io.IOException;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
+import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolResponseProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto;
+import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable;
+import org.apache.hadoop.ipc.ProtocolSignature;
+import org.apache.hadoop.ipc.RPC;
+import org.apache.hadoop.ipc.VersionedProtocol;
+
+import com.google.protobuf.RpcController;
+import com.google.protobuf.ServiceException;
+
+/**
+ * Implementation for protobuf service that forwards requests
+ * received on {@link ClientDatanodeProtocolPB} to the
+ * {@link ClientDatanodeProtocol} server implementation.
+ */
+@InterfaceAudience.Private
+public class ClientDatanodeProtocolServerSideTranslatorPB implements
+    ClientDatanodeProtocolPB {
+  private final static RefreshNamenodesResponseProto REFRESH_NAMENODE_RESP =
+      RefreshNamenodesResponseProto.newBuilder().build();
+  private final static DeleteBlockPoolResponseProto DELETE_BLOCKPOOL_RESP =
+      DeleteBlockPoolResponseProto.newBuilder().build();
+  
+  private final ClientDatanodeProtocol impl;
+
+  public ClientDatanodeProtocolServerSideTranslatorPB(
+      ClientDatanodeProtocol impl) {
+    this.impl = impl;
+  }
+
+  @Override
+  public GetReplicaVisibleLengthResponseProto getReplicaVisibleLength(
+      RpcController unused, GetReplicaVisibleLengthRequestProto request)
+      throws ServiceException {
+    long len;
+    try {
+      len = impl.getReplicaVisibleLength(PBHelper.convert(request.getBlock()));
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+    return GetReplicaVisibleLengthResponseProto.newBuilder().setLength(len)
+        .build();
+  }
+
+  @Override
+  public RefreshNamenodesResponseProto refreshNamenode(
+      RpcController unused, RefreshNamenodesRequestProto request)
+      throws ServiceException {
+    try {
+      impl.refreshNamenodes();
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+    return REFRESH_NAMENODE_RESP;
+  }
+
+  @Override
+  public DeleteBlockPoolResponseProto deleteBlockPool(RpcController unused,
+      DeleteBlockPoolRequestProto request) throws ServiceException {
+    try {
+      impl.deleteBlockPool(request.getBlockPool(), request.getForce());
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+    return DELETE_BLOCKPOOL_RESP;
+  }
+
+  @Override
+  public GetBlockLocalPathInfoResponseProto getBlockLocalPathInfo(
+      RpcController unused, GetBlockLocalPathInfoRequestProto request)
+      throws ServiceException {
+    BlockLocalPathInfo resp;
+    try {
+      resp = impl.getBlockLocalPathInfo(PBHelper.convert(request.getBlock()), PBHelper.convert(request.getToken()));
+    } catch (IOException e) {
+      throw new ServiceException(e);
+    }
+    return GetBlockLocalPathInfoResponseProto.newBuilder()
+        .setBlock(PBHelper.convert(resp.getBlock()))
+        .setLocalPath(resp.getBlockPath()).setLocalMetaPath(resp.getMetaPath())
+        .build();
+  }
+
+  @Override
+  public long getProtocolVersion(String protocol, long clientVersion)
+      throws IOException {
+    return RPC.getProtocolVersion(ClientDatanodeProtocolPB.class);
+  }
+
+  /**
+   * The client side will redirect getProtocolSignature to
+   * getProtocolSignature2.
+   * 
+   * However the RPC layer below on the Server side will call getProtocolVersion
+   * and possibly in the future getProtocolSignature. Hence we still implement
+   * it even though the end client will never call this method.
+   * 
+   * @see VersionedProtocol#getProtocolVersion
+   */
+  @Override
+  public ProtocolSignature getProtocolSignature(String protocol,
+      long clientVersion, int clientMethodsHash) throws IOException {
+    /**
+     * Don't forward this to the server. The protocol version and signature is
+     * that of {@link ClientDatanodeProtocol}
+     */
+    if (!protocol.equals(RPC.getProtocolName(ClientDatanodeProtocol.class))) {
+      throw new IOException("Namenode Serverside implements " +
+          RPC.getProtocolName(ClientDatanodeProtocol.class) +
+          ". The following requested protocol is unknown: " + protocol);
+    }
+
+    return ProtocolSignature.getProtocolSignature(clientMethodsHash,
+        RPC.getProtocolVersion(ClientDatanodeProtocolPB.class),
+        ClientDatanodeProtocolPB.class);
+  }
+
+
+  @Override
+  public ProtocolSignatureWritable getProtocolSignature2(String protocol,
+      long clientVersion, int clientMethodsHash) throws IOException {
+    /**
+     * Don't forward this to the server. The protocol version and signature is
+     * that of {@link ClientDatanodeProtocol}
+     */
+    return ProtocolSignatureWritable.convert(
+        this.getProtocolSignature(protocol, clientVersion, clientMethodsHash));
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolTranslatorPB.java

@@ -0,0 +1,136 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hdfs.protocolPB;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
+import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
+import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto;
+import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto;
+import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable;
+import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
+import org.apache.hadoop.ipc.ProtobufHelper;
+import org.apache.hadoop.ipc.ProtobufRpcEngine;
+import org.apache.hadoop.ipc.ProtocolSignature;
+import org.apache.hadoop.ipc.RPC;
+import org.apache.hadoop.security.token.Token;
+
+import com.google.protobuf.RpcController;
+import com.google.protobuf.ServiceException;
+
+/**
+ * This class is the client side translator to translate the requests made on
+ * {@link ClientDatanodeProtocol} interfaces to the RPC server implementing
+ * {@link ClientDatanodeProtocolPB}.
+ */
+@InterfaceAudience.Private
+@InterfaceStability.Stable
+public class ClientDatanodeProtocolTranslatorPB implements
+    ClientDatanodeProtocol, Closeable {
+  /** RpcController is not used and hence is set to null */
+  private final static RpcController NULL_CONTROLLER = null;
+  private final ClientDatanodeProtocolPB rpcProxy;
+  private final static RefreshNamenodesRequestProto REFRESH_NAMENODES = 
+      RefreshNamenodesRequestProto.newBuilder().build();
+
+
+  public ClientDatanodeProtocolTranslatorPB(InetSocketAddress nameNodeAddr,
+      Configuration conf) throws IOException {
+    RPC.setProtocolEngine(conf, ClientDatanodeProtocolPB.class,
+        ProtobufRpcEngine.class);
+    rpcProxy = RPC.getProxy(ClientDatanodeProtocolPB.class,
+        RPC.getProtocolVersion(ClientDatanodeProtocolPB.class), nameNodeAddr,
+        conf);
+  }
+
+  @Override
+  public void close() {
+    RPC.stopProxy(rpcProxy);
+  }
+
+  @Override
+  public long getProtocolVersion(String protocolName, long clientVersion)
+      throws IOException {
+    return rpcProxy.getProtocolVersion(protocolName, clientVersion);
+  }
+
+  @Override
+  public ProtocolSignature getProtocolSignature(String protocol,
+      long clientVersion, int clientMethodsHash) throws IOException {
+    return ProtocolSignatureWritable.convert(rpcProxy.getProtocolSignature2(
+        protocol, clientVersion, clientMethodsHash));
+  }
+
+  @Override
+  public long getReplicaVisibleLength(ExtendedBlock b) throws IOException {
+    GetReplicaVisibleLengthRequestProto req = GetReplicaVisibleLengthRequestProto
+        .newBuilder().setBlock(PBHelper.convert(b)).build();
+    try {
+      return rpcProxy.getReplicaVisibleLength(NULL_CONTROLLER, req).getLength();
+    } catch (ServiceException e) {
+      throw ProtobufHelper.getRemoteException(e);
+    }
+  }
+
+  @Override
+  public void refreshNamenodes() throws IOException {
+    try {
+      rpcProxy.refreshNamenode(NULL_CONTROLLER, REFRESH_NAMENODES);
+    } catch (ServiceException e) {
+      throw ProtobufHelper.getRemoteException(e);
+    }
+  }
+
+  @Override
+  public void deleteBlockPool(String bpid, boolean force) throws IOException {
+    DeleteBlockPoolRequestProto req = DeleteBlockPoolRequestProto.newBuilder()
+        .setBlockPool(bpid).setForce(force).build();
+    try {
+      rpcProxy.deleteBlockPool(NULL_CONTROLLER, req);
+    } catch (ServiceException e) {
+      throw ProtobufHelper.getRemoteException(e);
+    }
+  }
+
+  @Override
+  public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
+      Token<BlockTokenIdentifier> token) throws IOException {
+    GetBlockLocalPathInfoRequestProto req =
+        GetBlockLocalPathInfoRequestProto.newBuilder()
+        .setBlock(PBHelper.convert(block))
+        .setToken(PBHelper.convert(token)).build();
+    GetBlockLocalPathInfoResponseProto resp;
+    try {
+      resp = rpcProxy.getBlockLocalPathInfo(NULL_CONTROLLER, req);
+    } catch (ServiceException e) {
+      throw ProtobufHelper.getRemoteException(e);
+    }
+    return new BlockLocalPathInfo(PBHelper.convert(resp.getBlock()),
+        resp.getLocalPath(), resp.getLocalMetaPath());
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/InterDatanodeProtocolServerSideTranslatorPB.java

@@ -113,7 +113,7 @@ public class InterDatanodeProtocolServerSideTranslatorPB implements
 
     return ProtocolSignature.getProtocolSignature(clientMethodsHash,
         RPC.getProtocolVersion(InterDatanodeProtocolPB.class),
-        InterDatanodeProtocol.class);
+        InterDatanodeProtocolPB.class);
   }
 
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java

@@ -66,6 +66,7 @@ import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLog;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
 import org.apache.hadoop.hdfs.server.protocol.BlocksWithLocations.BlockWithLocations;
+import org.apache.hadoop.io.Text;
 import org.apache.hadoop.security.token.Token;
 
 import com.google.protobuf.ByteString;
@@ -393,6 +394,13 @@ class PBHelper {
         .setKind(token.getKind().toString()).setPassword(password)
         .setService(token.getService().toString()).build();
   }
+  
+  public static Token<BlockTokenIdentifier> convert(
+      BlockTokenIdentifierProto blockToken) {
+    return new Token<BlockTokenIdentifier>(blockToken.getIdentifier()
+        .toByteArray(), blockToken.getPassword().toByteArray(), new Text(
+        blockToken.getKind()), new Text(blockToken.getService()));
+  }
 
   public static ReplicaState convert(ReplicaStateProto state) {
     switch (state) {

hadoop-hdfs-project/hadoop-hdfs/src/proto/ClientDatanodeProtocol.proto

@@ -0,0 +1,122 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// This file contains protocol buffers that are used throughout HDFS -- i.e.
+// by the client, server, and data transfer protocols.
+
+option java_package = "org.apache.hadoop.hdfs.protocol.proto";
+option java_outer_classname = "ClientDatanodeProtocolProtos";
+option java_generic_services = true;
+option java_generate_equals_and_hash = true;
+
+import "hdfs.proto";
+
+/**
+ * block - block for which visible length is requested
+ */
+message GetReplicaVisibleLengthRequestProto {
+  required ExtendedBlockProto block = 1;
+}
+
+/**
+ * length - visible length of the block
+ */
+message GetReplicaVisibleLengthResponseProto {
+  required uint64 length = 1;
+}
+
+/**
+ * void request
+ */
+message RefreshNamenodesRequestProto {
+}
+
+/**
+ * void response
+ */
+message RefreshNamenodesResponseProto {
+}
+
+/**
+ * blockPool - block pool to be deleted
+ * force - if false, delete the block pool only if it is empty.
+ *         if true, delete the block pool even if it has blocks.
+ */
+message DeleteBlockPoolRequestProto {
+  required string blockPool = 1;
+  required bool force = 2;
+}
+
+/**
+ * void response
+ */
+message DeleteBlockPoolResponseProto {
+}
+
+/**
+ * Gets the file information where block and its metadata is stored
+ * block - block for which path information is being requested
+ * token - block token
+ */
+message GetBlockLocalPathInfoRequestProto {
+  required ExtendedBlockProto block = 1;
+  required BlockTokenIdentifierProto token = 2;
+}
+
+/**
+ * block - block for which file path information is being returned
+ * localPath - file path where the block data is stored
+ * localMetaPath - file path where the block meta data is stored
+ */
+message GetBlockLocalPathInfoResponseProto {
+  required ExtendedBlockProto block = 1;
+  required string localPath = 2;
+  required string localMetaPath = 3;
+}
+
+/**
+ * Protocol used from client to the Datanode.
+ * See the request and response for details of rpc call.
+ */
+service ClientDatanodeProtocolService {
+  /**
+   * Returns the visible length of the replica
+   */
+  rpc getReplicaVisibleLength(GetReplicaVisibleLengthRequestProto)
+      returns(GetReplicaVisibleLengthResponseProto);
+
+  /**
+   * Refresh the list of federated namenodes from updated configuration.
+   * Adds new namenodes and stops the deleted namenodes.
+   */
+  rpc refreshNamenode(RefreshNamenodesRequestProto)
+      returns(RefreshNamenodesResponseProto);
+
+  /**
+   * Delete the block pool from the datanode.
+   */
+  rpc deleteBlockPool(DeleteBlockPoolRequestProto)
+      returns(DeleteBlockPoolResponseProto);
+
+  /**
+   * Retrieves the path names of the block file and metadata file stored on the
+   * local file system.
+   */
+  rpc getBlockLocalPathInfo(GetBlockLocalPathInfoRequestProto)
+      returns(GetBlockLocalPathInfoResponseProto);
+}

hadoop-hdfs-project/hadoop-hdfs/src/proto/InterDatanodeProtocol.proto

@@ -38,7 +38,7 @@ message InitReplicaRecoveryRequestProto {
  * Repica recovery information
  */
 message InitReplicaRecoveryResponseProto {
-  required ReplicaStateProto state = 1; // State fo the replica
+  required ReplicaStateProto state = 1; // State of the replica
   required BlockProto block = 2;   // block information
 }
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocolPB/TestPBHelper.java

@@ -21,6 +21,7 @@ import static junit.framework.Assert.*;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.EnumSet;
 import java.util.List;
 
 import org.apache.hadoop.hdfs.protocol.Block;
@@ -29,6 +30,7 @@ import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
 import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockKeyProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockProto;
+import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockTokenIdentifierProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockWithLocationsProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlocksWithLocationsProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.CheckpointCommandProto;
@@ -43,7 +45,9 @@ import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.RemoteEditLogManifestPro
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.RemoteEditLogProto;
 import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.StorageInfoProto;
 import org.apache.hadoop.hdfs.security.token.block.BlockKey;
+import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
 import org.apache.hadoop.hdfs.security.token.block.ExportedBlockKeys;
+import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager.AccessMode;
 import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NamenodeRole;
 import org.apache.hadoop.hdfs.server.common.StorageInfo;
 import org.apache.hadoop.hdfs.server.namenode.CheckpointSignature;
@@ -54,6 +58,7 @@ import org.apache.hadoop.hdfs.server.protocol.NamenodeRegistration;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLog;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
 import org.apache.hadoop.io.Text;
+import org.apache.hadoop.security.token.Token;
 import org.junit.Test;
 
 /**
@@ -279,6 +284,11 @@ public class TestPBHelper {
     ExtendedBlockProto bProto = PBHelper.convert(b);
     ExtendedBlock b1 = PBHelper.convert(bProto);
     assertEquals(b, b1);
+    
+    b.setBlockId(-1);
+    bProto = PBHelper.convert(b);
+    b1 = PBHelper.convert(bProto);
+    assertEquals(b, b1);
   }
   
   @Test
@@ -302,4 +312,17 @@ public class TestPBHelper {
     Text t1 = new Text(s);
     assertEquals(t, t1);
   }
+  
+  @Test
+  public void testBlockTokenIdentifier() {
+    Token<BlockTokenIdentifier> token = new Token<BlockTokenIdentifier>(
+        "identifier".getBytes(), "password".getBytes(), new Text("kind"),
+        new Text("service"));
+    BlockTokenIdentifierProto tokenProto = PBHelper.convert(token);
+    Token<BlockTokenIdentifier> token2 = PBHelper.convert(tokenProto);
+    assertTrue(Arrays.equals(token.getIdentifier(), token2.getIdentifier()));
+    assertTrue(Arrays.equals(token.getPassword(), token2.getPassword()));
+    assertEquals(token.getKind(), token2.getKind());
+    assertEquals(token.getService(), token2.getService());
+  }
 }