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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9845) Update protobuf to 2.5 from 2.4.x
Date Wed, 07 Aug 2013 13:46:48 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13731992#comment-13731992

Hadoop QA commented on HADOOP-9845:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:red}-1 javac{color:red}.  The patch appears to cause the build to fail.

Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/2942//console

This message is automatically generated.
> Update protobuf to 2.5 from 2.4.x
> ---------------------------------
>                 Key: HADOOP-9845
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9845
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: performance
>    Affects Versions: 2.0.5-alpha
>            Reporter: stack
>            Assignee: Alejandro Abdelnur
>            Priority: Blocker
>             Fix For: 2.1.0-beta
>         Attachments: HADOOP-9845.patch, HADOOP-9845.patch
> protobuf 2.5 is a bit faster with a new Parse to avoid a builder step and a few other
goodies that we'd like to take advantage of over in hbase especially now we are all pb all
the time.  Unfortunately the protoc generated files are no longer compatible w/ 2.4.1 generated
files.  Hadoop uses 2.4.1 pb.  This latter fact makes it so we cannot upgrade until hadoop
> This issue suggests hadoop2 move to protobuf 2.5.
> I can do the patch no prob. if there is interest.
> (When we upgraded our build broke with complaints like the below:
> {code}
> java.lang.UnsupportedOperationException: This is supposed to be overridden by subclasses.
> 	at com.google.protobuf.GeneratedMessage.getUnknownFields(GeneratedMessage.java:180)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$GetDatanodeReportRequestProto.getSerializedSize(ClientNamenodeProtocolProtos.java:21566)
> 	at com.google.protobuf.AbstractMessageLite.toByteString(AbstractMessageLite.java:49)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.constructRpcRequest(ProtobufRpcEngine.java:149)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:193)
> 	at com.sun.proxy.$Proxy14.getDatanodeReport(Unknown Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
> 	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
> 	at com.sun.proxy.$Proxy14.getDatanodeReport(Unknown Source)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getDatanodeReport(ClientNamenodeProtocolTranslatorPB.java:488)
> 	at org.apache.hadoop.hdfs.DFSClient.datanodeReport(DFSClient.java:1887)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.waitActive(MiniDFSCluster.java:1798
> ...
> {code}
> More over in HBASE-8165 if interested.

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