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https://issues.apache.org/jira/browse/HBASE-3449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12983019#action_12983019
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stack commented on HBASE-3449:
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A workaround would be to up the ExecutorType.MASTER_META_SERVER_OPERATIONS from
2 to 5 to lower incidence of this happening. Longer term would require
architectural change. The executorservice is autonomous. In old days, we'd
put ourselves back on a queue if we couldn't proceed. We don't have that
facility any more.
> Server shutdown handlers deadlocked waiting for META
> ----------------------------------------------------
>
> Key: HBASE-3449
> URL: https://issues.apache.org/jira/browse/HBASE-3449
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.0
> Reporter: Todd Lipcon
> Priority: Blocker
>
> I have a situation where both of my MASTER_META_SERVER_OPERATIONS handlers
> are handling server shutdowns, and both of them are waiting on ROOT, which
> isn't coming up. Unclear exactly how this happened, but I triggered it by
> doing a rolling restart.
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