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https://issues.apache.org/jira/browse/HBASE-20777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16521745#comment-16521745
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Duo Zhang commented on HBASE-20777:
-----------------------------------
There is a stayClosed flag in DefaultChannelGroup and the default value is
false, which means after closing we could still add channel to the channel
group.
See this issue:
https://github.com/netty/netty/issues/4020
Let prepare a one line patch for it.
> TestAsyncTableBatch is flakey
> -----------------------------
>
> Key: HBASE-20777
> URL: https://issues.apache.org/jira/browse/HBASE-20777
> Project: HBase
> Issue Type: Bug
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HBASE-20777.patch,
> org.apache.hadoop.hbase.client.TestAsyncTableBatch-output.txt
>
>
> The log is very strange, we keep sending request to a dead RS, and the result
> is not connection refused, but rpc timeout, and later it becomes
> CallQueueTooBig...
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