HDFS-11513. Ozone: Separate XceiverServer and XceiverClient into interfaces and implementations.

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/XceiverClient.java

@@ -33,14 +33,13 @@ import org.apache.hadoop.scm.container.common.helpers.Pipeline;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.Closeable;
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 
 /**
  * A Client for the storageContainer protocol.
  */
-public class XceiverClient implements Closeable {
+public class XceiverClient implements XceiverClientSpi {
   static final Logger LOG = LoggerFactory.getLogger(XceiverClient.class);
   private final Pipeline pipeline;
   private final Configuration config;
@@ -61,9 +60,7 @@ public class XceiverClient implements Closeable {
     this.config = config;
   }
 
-  /**
-   * Connects to the leader in the pipeline.
-   */
+  @Override
   public void connect() throws Exception {
     if (channelFuture != null
         && channelFuture.channel() != null
@@ -90,9 +87,6 @@ public class XceiverClient implements Closeable {
     channelFuture = b.connect(leader.getHostName(), port).sync();
   }
 
-  /**
-   * Close the client.
-   */
   @Override
   public void close() {
     if(group != null) {
@@ -104,22 +98,12 @@ public class XceiverClient implements Closeable {
     }
   }
 
-  /**
-   * Returns the pipeline of machines that host the container used by this
-   * client.
-   *
-   * @return pipeline of machines that host the container
-   */
+  @Override
   public Pipeline getPipeline() {
     return pipeline;
   }
 
-  /**
-   * Sends a given command to server and gets the reply back.
-   * @param request Request
-   * @return Response to the command
-   * @throws IOException
-   */
+  @Override
   public ContainerProtos.ContainerCommandResponseProto sendCommand(
       ContainerProtos.ContainerCommandRequestProto request)
       throws IOException {

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/XceiverClientManager.java

@@ -96,7 +96,7 @@ public class XceiverClientManager {
    * @return XceiverClient connected to a container
    * @throws IOException if an XceiverClient cannot be acquired
    */
-  public XceiverClient acquireClient(Pipeline pipeline) throws IOException {
+  public XceiverClientSpi acquireClient(Pipeline pipeline) throws IOException {
     Preconditions.checkNotNull(pipeline);
     Preconditions.checkArgument(pipeline.getMachines() != null);
     Preconditions.checkArgument(!pipeline.getMachines().isEmpty());
@@ -109,7 +109,7 @@ public class XceiverClientManager {
       return info.getXceiverClient();
     } else {
       // connection not found, create new, add reference and return
-      XceiverClient xceiverClient = new XceiverClient(pipeline, conf);
+      XceiverClientSpi xceiverClient = new XceiverClient(pipeline, conf);
       try {
         xceiverClient.connect();
       } catch (Exception e) {
@@ -129,7 +129,7 @@ public class XceiverClientManager {
    *
    * @param xceiverClient client to release
    */
-  public void releaseClient(XceiverClient xceiverClient) {
+  public void releaseClient(XceiverClientSpi xceiverClient) {
     Preconditions.checkNotNull(xceiverClient);
     String containerName = xceiverClient.getPipeline().getContainerName();
     XceiverClientWithAccessInfo info;
@@ -147,10 +147,10 @@ public class XceiverClientManager {
    * - a reference count, +1 when acquire, -1 when release
    */
   private static class XceiverClientWithAccessInfo {
-    final private XceiverClient xceiverClient;
+    final private XceiverClientSpi xceiverClient;
     final private AtomicInteger referenceCount;
 
-    XceiverClientWithAccessInfo(XceiverClient xceiverClient) {
+    XceiverClientWithAccessInfo(XceiverClientSpi xceiverClient) {
       this.xceiverClient = xceiverClient;
       this.referenceCount = new AtomicInteger(0);
     }
@@ -167,7 +167,7 @@ public class XceiverClientManager {
       return this.referenceCount.get() != 0;
     }
 
-    XceiverClient getXceiverClient() {
+    XceiverClientSpi getXceiverClient() {
       return xceiverClient;
     }
   }

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/XceiverClientSpi.java

@@ -0,0 +1,56 @@
+/*
+ * 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.scm;
+
+import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ContainerCommandRequestProto;
+import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ContainerCommandResponseProto;
+import org.apache.hadoop.scm.container.common.helpers.Pipeline;
+
+import java.io.Closeable;
+import java.io.IOException;
+
+/**
+ * A Client for the storageContainer protocol.
+ */
+public interface XceiverClientSpi extends Closeable {
+  /**
+   * Connects to the leader in the pipeline.
+   */
+  void connect() throws Exception;
+
+  @Override
+  void close();
+
+  /**
+   * Returns the pipeline of machines that host the container used by this
+   * client.
+   *
+   * @return pipeline of machines that host the container
+   */
+  Pipeline getPipeline();
+
+  /**
+   * Sends a given command to server and gets the reply back.
+   * @param request Request
+   * @return Response to the command
+   * @throws IOException
+   */
+  ContainerCommandResponseProto sendCommand(
+      ContainerCommandRequestProto request) throws IOException;
+}

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/client/ContainerOperationClient.java

@@ -17,8 +17,8 @@
  */
 package org.apache.hadoop.scm.client;
 
+import org.apache.hadoop.scm.XceiverClientSpi;
 import org.apache.hadoop.scm.protocolPB.StorageContainerLocationProtocolClientSideTranslatorPB;
-import org.apache.hadoop.scm.XceiverClient;
 import org.apache.hadoop.scm.XceiverClientManager;
 import org.apache.hadoop.scm.container.common.helpers.Pipeline;
 import org.apache.hadoop.scm.storage.ContainerProtocolCalls;
@@ -75,7 +75,7 @@ public class ContainerOperationClient implements ScmClient {
   @Override
   public Pipeline createContainer(String containerId)
       throws IOException {
-    XceiverClient client = null;
+    XceiverClientSpi client = null;
     try {
       Pipeline pipeline =
           storageContainerLocationClient.allocateContainer(containerId);

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/storage/ChunkInputStream.java

@@ -29,7 +29,7 @@ import com.google.protobuf.ByteString;
 
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ReadChunkResponseProto;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ChunkInfo;
-import org.apache.hadoop.scm.XceiverClient;
+import org.apache.hadoop.scm.XceiverClientSpi;
 import org.apache.hadoop.scm.XceiverClientManager;
 
 /**
@@ -47,7 +47,7 @@ public class ChunkInputStream extends InputStream {
   private final String key;
   private final String traceID;
   private XceiverClientManager xceiverClientManager;
-  private XceiverClient xceiverClient;
+  private XceiverClientSpi xceiverClient;
   private List<ChunkInfo> chunks;
   private int chunkOffset;
   private List<ByteBuffer> buffers;
@@ -63,7 +63,7 @@ public class ChunkInputStream extends InputStream {
    * @param traceID container protocol call traceID
    */
   public ChunkInputStream(String key, XceiverClientManager xceiverClientManager,
-      XceiverClient xceiverClient, List<ChunkInfo> chunks, String traceID) {
+      XceiverClientSpi xceiverClient, List<ChunkInfo> chunks, String traceID) {
     this.key = key;
     this.traceID = traceID;
     this.xceiverClientManager = xceiverClientManager;

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/storage/ChunkOutputStream.java

@@ -32,8 +32,8 @@ import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ChunkInfo;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.KeyData;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.KeyValue;
 import org.apache.hadoop.scm.ScmConfigKeys;
-import org.apache.hadoop.scm.XceiverClient;
 import org.apache.hadoop.scm.XceiverClientManager;
+import org.apache.hadoop.scm.XceiverClientSpi;
 
 /**
  * An {@link OutputStream} used by the REST service in combination with the
@@ -58,7 +58,7 @@ public class ChunkOutputStream extends OutputStream {
   private final String traceID;
   private final KeyData.Builder containerKeyData;
   private XceiverClientManager xceiverClientManager;
-  private XceiverClient xceiverClient;
+  private XceiverClientSpi xceiverClient;
   private ByteBuffer buffer;
   private final String streamId;
   private int chunkIndex;
@@ -73,7 +73,7 @@ public class ChunkOutputStream extends OutputStream {
    * @param traceID container protocol call args
    */
   public ChunkOutputStream(String containerKey, String key,
-      XceiverClientManager xceiverClientManager, XceiverClient xceiverClient,
+      XceiverClientManager xceiverClientManager, XceiverClientSpi xceiverClient,
       String traceID) {
     this.containerKey = containerKey;
     this.key = key;

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/storage/ContainerProtocolCalls.java

@@ -45,10 +45,10 @@ import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.Type;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos
     .WriteChunkRequestProto;
-import org.apache.hadoop.scm.XceiverClient;
 import org.apache.hadoop.scm.container.common.helpers.StorageContainerException;
 
 import java.io.IOException;
+import org.apache.hadoop.scm.XceiverClientSpi;
 
 /**
  * Implementation of all container protocol calls performed by Container
@@ -71,7 +71,7 @@ public final class ContainerProtocolCalls {
    * @return container protocol get key response
    * @throws IOException if there is an I/O error while performing the call
    */
-  public static GetKeyResponseProto getKey(XceiverClient xceiverClient,
+  public static GetKeyResponseProto getKey(XceiverClientSpi xceiverClient,
       KeyData containerKeyData, String traceID) throws IOException {
     GetKeyRequestProto.Builder readKeyRequest = GetKeyRequestProto
         .newBuilder()
@@ -96,7 +96,7 @@ public final class ContainerProtocolCalls {
    * @param traceID container protocol call args
    * @throws IOException if there is an I/O error while performing the call
    */
-  public static void putKey(XceiverClient xceiverClient,
+  public static void putKey(XceiverClientSpi xceiverClient,
       KeyData containerKeyData, String traceID) throws IOException {
     PutKeyRequestProto.Builder createKeyRequest = PutKeyRequestProto
         .newBuilder()
@@ -122,7 +122,7 @@ public final class ContainerProtocolCalls {
    * @return container protocol read chunk response
    * @throws IOException if there is an I/O error while performing the call
    */
-  public static ReadChunkResponseProto readChunk(XceiverClient xceiverClient,
+  public static ReadChunkResponseProto readChunk(XceiverClientSpi xceiverClient,
       ChunkInfo chunk, String key, String traceID)
       throws IOException {
     ReadChunkRequestProto.Builder readChunkRequest = ReadChunkRequestProto
@@ -151,7 +151,7 @@ public final class ContainerProtocolCalls {
    * @param traceID container protocol call args
    * @throws IOException if there is an I/O error while performing the call
    */
-  public static void writeChunk(XceiverClient xceiverClient, ChunkInfo chunk,
+  public static void writeChunk(XceiverClientSpi xceiverClient, ChunkInfo chunk,
       String key, ByteString data, String traceID)
       throws IOException {
     WriteChunkRequestProto.Builder writeChunkRequest = WriteChunkRequestProto
@@ -183,7 +183,7 @@ public final class ContainerProtocolCalls {
    * @param traceID - Trace ID for logging purpose.
    * @throws IOException
    */
-  public static void writeSmallFile(XceiverClient client, String containerName,
+  public static void writeSmallFile(XceiverClientSpi client, String containerName,
       String key, byte[] data, String traceID) throws IOException {
 
     KeyData containerKeyData = KeyData
@@ -224,7 +224,7 @@ public final class ContainerProtocolCalls {
    * @param traceID - traceID
    * @throws IOException
    */
-  public static void createContainer(XceiverClient client, String traceID)
+  public static void createContainer(XceiverClientSpi client, String traceID)
       throws IOException {
     ContainerProtos.CreateContainerRequestProto.Builder createRequest =
         ContainerProtos.CreateContainerRequestProto
@@ -255,7 +255,7 @@ public final class ContainerProtocolCalls {
    * @return GetSmallFileResponseProto
    * @throws IOException
    */
-  public static GetSmallFileResponseProto readSmallFile(XceiverClient client,
+  public static GetSmallFileResponseProto readSmallFile(XceiverClientSpi client,
       String containerName, String key, String traceID) throws IOException {
     KeyData containerKeyData = KeyData
         .newBuilder()

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/XceiverServer.java

@@ -36,7 +36,7 @@ import java.io.IOException;
  * Creates a netty server endpoint that acts as the communication layer for
  * Ozone containers.
  */
-public final class XceiverServer {
+public final class XceiverServer implements XceiverServerSpi {
   private final int port;
   private final ContainerDispatcher storageContainer;
 
@@ -57,11 +57,7 @@ public final class XceiverServer {
     this.storageContainer = dispatcher;
   }
 
-  /**
-   * Starts running the server.
-   *
-   * @throws IOException
-   */
+  @Override
   public void start() throws IOException {
     bossGroup = new NioEventLoopGroup();
     workerGroup = new NioEventLoopGroup();
@@ -75,11 +71,7 @@ public final class XceiverServer {
         .channel();
   }
 
-  /**
-   * Stops a running server.
-   *
-   * @throws Exception
-   */
+  @Override
   public void stop() {
     if (bossGroup != null) {
       bossGroup.shutdownGracefully();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/XceiverServerSpi.java

@@ -0,0 +1,30 @@
+/*
+ * 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.ozone.container.common.transport.server;
+
+import java.io.IOException;
+
+/** A server endpoint that acts as the communication layer for Ozone containers. */
+public interface XceiverServerSpi {
+  /** Starts the server. */
+  void start() throws IOException;
+
+  /** Stops a running server. */
+  void stop();
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/ozoneimpl/OzoneContainer.java

@@ -31,6 +31,7 @@ import org.apache.hadoop.ozone.container.common.interfaces.KeyManager;
 import org.apache.hadoop.ozone.container.common.transport.server.XceiverServer;
 import org.apache.hadoop.ozone.protocol.proto
     .StorageContainerDatanodeProtocolProtos.SCMNodeReport;
+import org.apache.hadoop.ozone.container.common.transport.server.XceiverServerSpi;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -51,7 +52,7 @@ public class OzoneContainer {
   private final Configuration ozoneConfig;
   private final ContainerDispatcher dispatcher;
   private final ContainerManager manager;
-  private final XceiverServer server;
+  private final XceiverServerSpi server;
   private final ChunkManager chunkManager;
   private final KeyManager keyManager;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/web/storage/DistributedStorageHandler.java

@@ -18,20 +18,6 @@
 
 package org.apache.hadoop.ozone.web.storage;
 
-import static org.apache.hadoop.scm.storage.ContainerProtocolCalls.*;
-import static org.apache.hadoop.ozone.web.storage.OzoneContainerTranslation.*;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.text.SimpleDateFormat;
-import java.util.Arrays;
-import java.util.Date;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Locale;
-import java.util.Set;
-import java.util.TimeZone;
-
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.ChunkInfo;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.GetKeyResponseProto;
 import org.apache.hadoop.hdfs.ozone.protocol.proto.ContainerProtos.KeyData;
@@ -40,7 +26,6 @@ import org.apache.hadoop.hdfs.server.datanode.fsdataset.LengthInputStream;
 import org.apache.hadoop.ozone.OzoneConfiguration;
 import org.apache.hadoop.ozone.OzoneConsts;
 import org.apache.hadoop.scm.container.common.helpers.Pipeline;
-import org.apache.hadoop.scm.XceiverClient;
 import org.apache.hadoop.scm.XceiverClientManager;
 import org.apache.hadoop.scm.protocol.LocatedContainer;
 import org.apache.hadoop.scm.protocolPB.StorageContainerLocationProtocolClientSideTranslatorPB;
@@ -50,17 +35,21 @@ import org.apache.hadoop.ozone.web.handlers.KeyArgs;
 import org.apache.hadoop.ozone.web.handlers.ListArgs;
 import org.apache.hadoop.ozone.web.handlers.VolumeArgs;
 import org.apache.hadoop.ozone.web.interfaces.StorageHandler;
-import org.apache.hadoop.ozone.web.response.BucketInfo;
-import org.apache.hadoop.ozone.web.response.KeyInfo;
-import org.apache.hadoop.ozone.web.response.ListBuckets;
-import org.apache.hadoop.ozone.web.response.ListKeys;
-import org.apache.hadoop.ozone.web.response.ListVolumes;
-import org.apache.hadoop.ozone.web.response.VolumeInfo;
-import org.apache.hadoop.ozone.web.response.VolumeOwner;
+import org.apache.hadoop.ozone.web.response.*;
+import org.apache.hadoop.scm.XceiverClientSpi;
 import org.apache.hadoop.scm.storage.ChunkInputStream;
 import org.apache.hadoop.scm.storage.ChunkOutputStream;
 import org.apache.hadoop.util.StringUtils;
 
+import java.io.IOException;
+import java.io.OutputStream;
+import java.text.SimpleDateFormat;
+import java.util.*;
+
+import static org.apache.hadoop.ozone.web.storage.OzoneContainerTranslation.*;
+import static org.apache.hadoop.scm.storage.ContainerProtocolCalls.getKey;
+import static org.apache.hadoop.scm.storage.ContainerProtocolCalls.putKey;
+
 /**
  * A {@link StorageHandler} implementation that distributes object storage
  * across the nodes of an HDFS cluster.
@@ -87,7 +76,7 @@ public final class DistributedStorageHandler implements StorageHandler {
   @Override
   public void createVolume(VolumeArgs args) throws IOException, OzoneException {
     String containerKey = buildContainerKey(args.getVolumeName());
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     try {
       VolumeInfo volume = new VolumeInfo();
       volume.setVolumeName(args.getVolumeName());
@@ -137,7 +126,7 @@ public final class DistributedStorageHandler implements StorageHandler {
   public VolumeInfo getVolumeInfo(VolumeArgs args)
       throws IOException, OzoneException {
     String containerKey = buildContainerKey(args.getVolumeName());
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     try {
       KeyData containerKeyData = containerKeyDataForRead(
           xceiverClient.getPipeline().getContainerName(), containerKey);
@@ -155,7 +144,7 @@ public final class DistributedStorageHandler implements StorageHandler {
       throws IOException, OzoneException {
     String containerKey = buildContainerKey(args.getVolumeName(),
         args.getBucketName());
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     try {
       BucketInfo bucket = new BucketInfo();
       bucket.setVolumeName(args.getVolumeName());
@@ -215,7 +204,7 @@ public final class DistributedStorageHandler implements StorageHandler {
       throws IOException, OzoneException {
     String containerKey = buildContainerKey(args.getVolumeName(),
         args.getBucketName());
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     try {
       KeyData containerKeyData = containerKeyDataForRead(
           xceiverClient.getPipeline().getContainerName(), containerKey);
@@ -236,7 +225,7 @@ public final class DistributedStorageHandler implements StorageHandler {
     KeyInfo key = new KeyInfo();
     key.setKeyName(args.getKeyName());
     key.setCreatedOn(dateToString(new Date()));
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     return new ChunkOutputStream(containerKey, key.getKeyName(),
         xceiverClientManager, xceiverClient, args.getRequestID());
   }
@@ -252,7 +241,7 @@ public final class DistributedStorageHandler implements StorageHandler {
       OzoneException {
     String containerKey = buildContainerKey(args.getVolumeName(),
         args.getBucketName(), args.getKeyName());
-    XceiverClient xceiverClient = acquireXceiverClient(containerKey);
+    XceiverClientSpi xceiverClient = acquireXceiverClient(containerKey);
     boolean success = false;
     try {
       KeyData containerKeyData = containerKeyDataForRead(
@@ -286,7 +275,7 @@ public final class DistributedStorageHandler implements StorageHandler {
   }
 
   /**
-   * Acquires an {@link XceiverClient} connected to a {@link Pipeline} of nodes
+   * Acquires an {@link XceiverClientSpi} connected to a {@link Pipeline} of nodes
    * capable of serving container protocol operations.  The container is
    * selected based on the specified container key.
    *
@@ -294,7 +283,7 @@ public final class DistributedStorageHandler implements StorageHandler {
    * @return XceiverClient connected to a container
    * @throws IOException if an XceiverClient cannot be acquired
    */
-  private XceiverClient acquireXceiverClient(String containerKey)
+  private XceiverClientSpi acquireXceiverClient(String containerKey)
       throws IOException {
     Set<LocatedContainer> locatedContainers =
         storageContainerLocation.getStorageContainerLocations(

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/scm/TestContainerSmallFile.java

@@ -23,8 +23,8 @@ import org.apache.hadoop.ozone.MiniOzoneCluster;
 import org.apache.hadoop.ozone.OzoneConfiguration;
 import org.apache.hadoop.scm.protocolPB
     .StorageContainerLocationProtocolClientSideTranslatorPB;
-import org.apache.hadoop.scm.XceiverClient;
 import org.apache.hadoop.scm.XceiverClientManager;
+import org.apache.hadoop.scm.XceiverClientSpi;
 import org.apache.hadoop.scm.container.common.helpers.Pipeline;
 import org.apache.hadoop.scm.container.common.helpers.StorageContainerException;
 import org.apache.hadoop.scm.storage.ContainerProtocolCalls;
@@ -75,7 +75,7 @@ public class TestContainerSmallFile {
     String containerName = "container0";
     Pipeline pipeline =
         storageContainerLocationClient.allocateContainer(containerName);
-    XceiverClient client = xceiverClientManager.acquireClient(pipeline);
+    XceiverClientSpi client = xceiverClientManager.acquireClient(pipeline);
     ContainerProtocolCalls.createContainer(client, traceID);
 
     ContainerProtocolCalls.writeSmallFile(client, containerName,
@@ -93,7 +93,7 @@ public class TestContainerSmallFile {
     String containerName = "container1";
     Pipeline pipeline =
         storageContainerLocationClient.allocateContainer(containerName);
-    XceiverClient client = xceiverClientManager.acquireClient(pipeline);
+    XceiverClientSpi client = xceiverClientManager.acquireClient(pipeline);
     ContainerProtocolCalls.createContainer(client, traceID);
 
     thrown.expect(StorageContainerException.class);
@@ -112,7 +112,7 @@ public class TestContainerSmallFile {
     String containerName = "container2";
     Pipeline pipeline =
         storageContainerLocationClient.allocateContainer(containerName);
-    XceiverClient client = xceiverClientManager.acquireClient(pipeline);
+    XceiverClientSpi client = xceiverClientManager.acquireClient(pipeline);
     ContainerProtocolCalls.createContainer(client, traceID);
     ContainerProtocolCalls.writeSmallFile(client, containerName,
         "key", "data123".getBytes(), traceID);