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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19976) Dead lock if the worker threads in procedure executor are exhausted
Date Mon, 12 Feb 2018 09:16:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360473#comment-16360473
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Duo Zhang commented on HBASE-19976:
-----------------------------------

It is not easy to fix since the MasterProcedureScheduler is really really complicated...

> Dead lock if the worker threads in procedure executor are exhausted
> -------------------------------------------------------------------
>
>                 Key: HBASE-19976
>                 URL: https://issues.apache.org/jira/browse/HBASE-19976
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Duo Zhang
>            Priority: Critical
>
> See the comments in HBASE-19554. If all the worker threads are stuck in AssignProcdure
since meta region is offline, then the RecoverMetaProcedure can not be executed and cause
dead lock.



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