HDFS-2499. RPC client is created incorrectly introduced in HDFS-2459. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1190620 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolR23Compatible/JournalProtocolTranslatorR23.java

@@ -20,26 +20,14 @@ package org.apache.hadoop.hdfs.protocolR23Compatible;
 import java.io.Closeable;
 import java.io.IOException;
 import java.net.InetSocketAddress;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.concurrent.TimeUnit;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
-import org.apache.hadoop.hdfs.protocol.HdfsConstants;
-import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.hdfs.server.protocol.JournalProtocol;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeRegistration;
-import org.apache.hadoop.io.retry.RetryPolicies;
-import org.apache.hadoop.io.retry.RetryPolicy;
-import org.apache.hadoop.io.retry.RetryProxy;
 import org.apache.hadoop.ipc.ProtocolSignature;
 import org.apache.hadoop.ipc.RPC;
-import org.apache.hadoop.ipc.RemoteException;
-import org.apache.hadoop.net.NetUtils;
-import org.apache.hadoop.security.UserGroupInformation;
 
 /**
  * This class forwards NN's ClientProtocol calls as RPC calls to the NN server
@@ -50,54 +38,17 @@ import org.apache.hadoop.security.UserGroupInformation;
 @InterfaceStability.Stable
 public class JournalProtocolTranslatorR23 implements
     JournalProtocol, Closeable {
-  final private JournalWireProtocol rpcProxyWithoutRetry;
-  final private JournalWireProtocol rpcProxy;
-
-  private static JournalWireProtocol createNamenode(
-      InetSocketAddress nameNodeAddr, Configuration conf,
-      UserGroupInformation ugi) throws IOException {
-    return RPC.getProxy(JournalWireProtocol.class,
-        JournalWireProtocol.versionID, nameNodeAddr, ugi, conf,
-        NetUtils.getSocketFactory(conf, JournalWireProtocol.class));
-  }
-
-  /** Create a {@link NameNode} proxy */
-  static JournalWireProtocol createNamenodeWithRetry(
-      JournalWireProtocol rpcNamenode) {
-    RetryPolicy createPolicy = RetryPolicies
-        .retryUpToMaximumCountWithFixedSleep(5,
-            HdfsConstants.LEASE_SOFTLIMIT_PERIOD, TimeUnit.MILLISECONDS);
-
-    Map<Class<? extends Exception>, RetryPolicy> remoteExceptionToPolicyMap = 
-        new HashMap<Class<? extends Exception>, RetryPolicy>();
-    remoteExceptionToPolicyMap.put(AlreadyBeingCreatedException.class,
-        createPolicy);
-
-    Map<Class<? extends Exception>, RetryPolicy> exceptionToPolicyMap = 
-        new HashMap<Class<? extends Exception>, RetryPolicy>();
-    exceptionToPolicyMap.put(RemoteException.class, RetryPolicies
-        .retryByRemoteException(RetryPolicies.TRY_ONCE_THEN_FAIL,
-            remoteExceptionToPolicyMap));
-    RetryPolicy methodPolicy = RetryPolicies.retryByException(
-        RetryPolicies.TRY_ONCE_THEN_FAIL, exceptionToPolicyMap);
-    Map<String, RetryPolicy> methodNameToPolicyMap = new HashMap<String, RetryPolicy>();
-
-    methodNameToPolicyMap.put("create", methodPolicy);
-
-    return (JournalWireProtocol) RetryProxy.create(
-        JournalWireProtocol.class, rpcNamenode, methodNameToPolicyMap);
-  }
+  private final JournalWireProtocol rpcProxy;
 
   public JournalProtocolTranslatorR23(InetSocketAddress nameNodeAddr,
       Configuration conf) throws IOException {
-    UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
-    rpcProxyWithoutRetry = createNamenode(nameNodeAddr, conf, ugi);
-    rpcProxy = createNamenodeWithRetry(rpcProxyWithoutRetry);
+    rpcProxy = RPC.getProxy(JournalWireProtocol.class,
+        JournalWireProtocol.versionID, nameNodeAddr, conf);
   }
 
   @Override
   public void close() {
-    RPC.stopProxy(rpcProxyWithoutRetry);
+    RPC.stopProxy(rpcProxy);
   }
 
   @Override