svn commit: r1295362 - in /hadoop/common/trunk/hadoop-mapreduce-project: CHANGES.txt hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java

[sseth]

Author: sseth
Date: Thu Mar  1 00:56:53 2012
New Revision: 1295362

URL: http://svn.apache.org/viewvc?rev=1295362&view=rev
Log:
MAPREDUCE-3885. Avoid an unnecessary copy for all requests/responses in MRs 
ProtoOverHadoopRpcEngine. (Contributed by Devaraj Das)

Modified:
    hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
    
hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java

Modified: hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
URL: 
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt?rev=1295362&r1=1295361&r2=1295362&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt (original)
+++ hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt Thu Mar  1 
00:56:53 2012
@@ -97,6 +97,9 @@ Release 0.23.3 - UNRELEASED
 
     MAPREDUCE-3909 Javadoc the Service interfaces (stevel)
 
+    MAPREDUCE-3885. Avoid an unnecessary copy for all requests/responses in 
+    MRs ProtoOverHadoopRpcEngine. (Devaraj Das via sseth)
+
   OPTIMIZATIONS
 
   BUG FIXES

Modified: 
hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java
URL: 
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java?rev=1295362&r1=1295361&r2=1295362&view=diff
==============================================================================
--- 
hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java
 (original)
+++ 
hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/ipc/ProtoOverHadoopRpcEngine.java
 Thu Mar  1 00:56:53 2012
@@ -34,6 +34,8 @@ import javax.net.SocketFactory;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.io.DataOutputOutputStream;
+import org.apache.hadoop.io.ObjectWritable;
 import org.apache.hadoop.io.Writable;
 import org.apache.hadoop.ipc.Client;
 import org.apache.hadoop.ipc.ProtocolMetaInfoPB;
@@ -46,6 +48,7 @@ import org.apache.hadoop.ipc.RpcPayloadH
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.SecretManager;
 import org.apache.hadoop.security.token.TokenIdentifier;
+import org.apache.hadoop.util.ProtoUtil;
 import org.apache.hadoop.yarn.exceptions.impl.pb.YarnRemoteExceptionPBImpl;
 import org.apache.hadoop.yarn.ipc.RpcProtos.ProtoSpecificRpcRequest;
 import org.apache.hadoop.yarn.ipc.RpcProtos.ProtoSpecificRpcResponse;
@@ -213,13 +216,13 @@ public class ProtoOverHadoopRpcEngine im
 
     @Override
     public void write(DataOutput out) throws IOException {
-      out.writeInt(message.toByteArray().length);
-      out.write(message.toByteArray());
+      ((Message)message).writeDelimitedTo(
+          DataOutputOutputStream.constructOutputStream(out));
     }
 
     @Override
     public void readFields(DataInput in) throws IOException {
-      int length = in.readInt();
+      int length = ProtoUtil.readRawVarint32(in);
       byte[] bytes = new byte[length];
       in.readFully(bytes);
       message = ProtoSpecificRpcRequest.parseFrom(bytes);
@@ -241,13 +244,13 @@ public class ProtoOverHadoopRpcEngine im
 
     @Override
     public void write(DataOutput out) throws IOException {
-      out.writeInt(message.toByteArray().length);
-      out.write(message.toByteArray());
+      ((Message)message).writeDelimitedTo(
+          DataOutputOutputStream.constructOutputStream(out));      
     }
 
     @Override
     public void readFields(DataInput in) throws IOException {
-      int length = in.readInt();
+      int length = ProtoUtil.readRawVarint32(in);
       byte[] bytes = new byte[length];
       in.readFully(bytes);
       message = ProtoSpecificRpcResponse.parseFrom(bytes);