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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2458) RS stuck in TreeMap,remove
Date Fri, 16 Apr 2010 13:56:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857816#action_12857816
] 

Todd Lipcon commented on HBASE-2458:
------------------------------------

I think the issue is unsynchronized access to the SoftValueSortedMap for each tableLocations
in HConnectionManager - it can eventually get the treemap into a corrupt state where it infinite
loops in the removal.

> RS stuck in TreeMap,remove
> --------------------------
>
>                 Key: HBASE-2458
>                 URL: https://issues.apache.org/jira/browse/HBASE-2458
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.20.4
>            Reporter: Todd Lipcon
>            Priority: Blocker
>         Attachments: stack.txt
>
>
> Testing 0.20_pre_durability@934691 one of my region servers got permanently stuck with
one thread looping inside TreeMap.remove. See attached stack.

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