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https://issues.apache.org/jira/browse/HADOOP-9845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Abdelnur updated HADOOP-9845:
---------------------------------------
Priority: Blocker (was: Major)
Target Version/s: 2.1.0-beta
Fix Version/s: 2.1.0-beta
Marking it as blocker as it will be more difficult for consumer projects, like
HBase, which depend on protoc to move to a newer version after beta.
[~stack], the failures you seen in Hbase I believe are because your are trying
to compile 2.4.0 generated protobuf java wit the 2.5.0 protobuf JAR. The prob
should go away if you regenerate your protobuf java code with 2.5.0 (have you
considered using the maven-protoc plugin so you don't have to checking
generated java code. granted, every hbase developer will have to have the
protoc compiler installed).
> 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
>
>
> 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
> does.
> 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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