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Junping Du commented on HADOOP-13866: ------------------------------------- Thanks [~yuzhih...@gmail.com] for doing more investigations. I also did similar investigations and got same conclusion that no evidence to show netty 4.1.x will break any backward compatibility toward 4.0.x. I think we should go forward to commit this patch without waiting for shading work especially we were using a beta version for netty before. As I mentioned above, we used to upgrade from Netty 3.x to 4.x in 2.7 release. Here, I don't see any problem to upgrade from 4.0.x to 4.1.x. 2.8.0 cannot wait forever, and I don't want 2.8.0 (and ongoing branch-2) release cannot work with HBase 2.x towards. If no one object, I will commit this patch (include 2.8.0) tomorrow. > 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} -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org