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https://issues.apache.org/jira/browse/HBASE-18199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045485#comment-16045485
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Duo Zhang commented on HBASE-18199:
-----------------------------------
Yeah the write task will be executed in the same thread with the events. So
there is no overlap, the event processing need to wait for a while before we
finish.
Will commit shortly. And I missed the fact that we still need to commit this
patch to branch-1, so let me remove the lambda expressions...
> Race in NettyRpcConnection may cause call stuck in
> BufferCallBeforeInitHandler forever
> --------------------------------------------------------------------------------------
>
> Key: HBASE-18199
> URL: https://issues.apache.org/jira/browse/HBASE-18199
> Project: HBase
> Issue Type: Bug
> Components: IPC/RPC
> Affects Versions: 3.0.0, 1.4.0, 2.0.0-alpha-1
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Fix For: 3.0.0, 1.4.0, 2.0.0-alpha-2
>
> Attachments: HBASE-18199.patch
>
>
> Found this when implementing the POC of HDFS-9924.
> The problem is that channel.writeAndFlush will find the first outbound
> handler before scheduling the actual write task into event loop, so it is
> possible that when we actually execute the write task, the first outbound
> handler has already been changed but the task still refers to the old handler
> which has already been removed.
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