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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 04:01:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183849#comment-13183849
] 

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

This change  has not been committed to branch. But the issue fixed version says it is present
in 0.90.
I will update this JIRA and create a new JIRA for fixing in 0.90.
                
> 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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