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From "ramkrishna.s.vasudevan (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4101) Regionserver Deadlock
Date Wed, 11 Jan 2012 04:40:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183857#comment-13183857
] 

ramkrishna.s.vasudevan commented on HBASE-4101:
-----------------------------------------------

I find that in 0.90 the CHANGES.txt alone is updated.  Should we remove that when we commit
HBASE-5178 (backport JIRA for this issue).?
                
> Regionserver Deadlock
> ---------------------
>
>                 Key: HBASE-4101
>                 URL: https://issues.apache.org/jira/browse/HBASE-4101
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.90.3
>         Environment: CentOS 5.5, CDH3 u0 Hadoop, HBase 0.90.3
>            Reporter: Matt Davies
>            Assignee: ramkrishna.s.vasudevan
>            Priority: Blocker
>             Fix For: 0.92.0
>
>         Attachments: HBASE-4101_0.90.patch, HBASE-4101_0.90_1.patch, HBASE-4101_trunk.patch,
HBASE-4101_trunk_1.patch, jstack.txt
>
>
> We periodically see a situation where the regionserver process exists in the process
list, zookeeper thread sends the keepalive so the master won't remove it from the active list,
yet the regionserver will not serve data.
> Hadoop(cdh3u0), HBase 0.90.3 (Apache version), under load from an internal testing tool.
> Attached is the full JStack

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