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https://issues.apache.org/jira/browse/HBASE-19976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16361608#comment-16361608
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stack commented on HBASE-19976:
-------------------------------
Issue on procedure priority; mostly about how how system tables get assigned of
user-space tables. Talks about how priority procedures are scheduled more
frequently than lower priority procedures and that high priority procedures get
scheduled at the front of the queues.....
> 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
> Assignee: stack
> 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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