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https://issues.apache.org/jira/browse/HADOOP-13866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15889238#comment-15889238
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Duo Zhang commented on HADOOP-13866:
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Have we published a 2.x hadoop final releases with netty-4.1.0.Beta? If no I
think we'd better upgrade it to 4.1.x.Final. Otherwise I think it is OK to keep
the old dependency. And since the upgrading does not acquire any source
changes, I think in HBase we could just exclude the netty dependency from
hadoop and use our own. Let's keep an eye on the later hadoop 2.x releases to
make sure that they do not use 4.1.0.Beta specific unstable APIs.
Thanks.
> Upgrade netty-all to 4.1.1.Final
> --------------------------------
>
> Key: HADOOP-13866
> URL: https://issues.apache.org/jira/browse/HADOOP-13866
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.0.0-alpha1
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Blocker
> Attachments: HADOOP-13866.v1.patch, HADOOP-13866.v2.patch,
> HADOOP-13866.v3.patch, HADOOP-13866.v4.patch, HADOOP-13866.v6.patch,
> HADOOP-13866.v7.patch, HADOOP-13866.v8.patch, HADOOP-13866.v8.patch,
> HADOOP-13866.v8.patch, HADOOP-13866.v9.patch
>
>
> netty-all 4.1.1.Final is stable release which we should upgrade to.
> See bottom of HADOOP-12927 for related discussion.
> This issue was discovered since hbase 2.0 uses 4.1.1.Final of netty.
> When launching mapreduce job from hbase, /grid/0/hadoop/yarn/local/
> usercache/hbase/appcache/application_1479850535804_0008/container_e01_1479850535804_0008_01_000005/mr-framework/hadoop/share/hadoop/hdfs/lib/netty-all-4.0.23.Final.jar
> (from hdfs) is ahead of 4.1.1.Final jar (from hbase) on the classpath.
> Resulting in the following exception:
> {code}
> 2016-12-01 20:17:26,678 WARN [Default-IPC-NioEventLoopGroup-1-1]
> io.netty.util.concurrent.DefaultPromise: An exception was thrown by
> org.apache.hadoop.hbase.ipc.NettyRpcConnection$3.operationComplete()
> java.lang.NoSuchMethodError:
> io.netty.buffer.ByteBuf.retainedDuplicate()Lio/netty/buffer/ByteBuf;
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection$3.operationComplete(NettyRpcConnection.java:272)
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection$3.operationComplete(NettyRpcConnection.java:262)
> at
> io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)
> at
> io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)
> at
> io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)
> {code}
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