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https://issues.apache.org/jira/browse/HADOOP-14043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847517#comment-15847517
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Ted Yu commented on HADOOP-14043:
---------------------------------
{code}
2017-01-25 01:55:48,433 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$3.operationComplete(NettyRpcConnection.java:262)
at
io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
at
io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)
at
io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)
at
io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
at
io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:253)
at
io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:288)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
{code}
> Shade netty dependency
> ----------------------
>
> Key: HADOOP-14043
> URL: https://issues.apache.org/jira/browse/HADOOP-14043
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.8.0
> Reporter: Ted Yu
>
> During review of HADOOP-13866, [~andrew.wang] mentioned considering shading
> netty before putting the fix into branch-2.
> This would give users better experience when upgrading hadoop.
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