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HADOOP-8084. Updates ProtoBufRpc engine to not do an unnecessary copy for RPC request/response. Contributed by Devaraj Das. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1291602 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Devaraj Das 2012-02-21 05:19:53 +00:00
parent 5ee495e6f3
commit ae7e43139d
2 changed files with 11 additions and 6 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -86,6 +86,9 @@ Trunk (unreleased changes)
HADOOP-8070. Add a standalone benchmark for RPC call performance. (todd)
HADOOP-8084. Updates ProtoBufRpc engine to not do an unnecessary copy
for RPC request/response. (ddas)
BUG FIXES
HADOOP-8018. Hudson auto test for HDFS has started throwing javadoc

14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine.java
View File

@ -34,6 +34,7 @@ import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.DataOutputOutputStream;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.ipc.Client.ConnectionId;
import org.apache.hadoop.ipc.RPC.RpcInvoker;
@ -45,6 +46,7 @@ import org.apache.hadoop.ipc.protobuf.HadoopRpcProtos.HadoopRpcResponseProto.Res
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.util.StringUtils;
import com.google.common.annotations.VisibleForTesting;
@ -268,13 +270,13 @@ public class ProtobufRpcEngine implements RpcEngine {
@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 = HadoopRpcRequestProto.parseFrom(bytes);
@ -297,13 +299,13 @@ public class ProtobufRpcEngine implements RpcEngine {
@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 = HadoopRpcResponseProto.parseFrom(bytes);