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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3449) Server shutdown handlers deadlocked waiting for META
Date Tue, 18 Jan 2011 05:34:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12983019#action_12983019
] 

stack commented on HBASE-3449:
------------------------------

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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