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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4101) Regionserver Deadlock
Date Tue, 19 Jul 2011 14:48:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067756#comment-13067756
] 

stack commented on HBASE-4101:
------------------------------

Patch looks great (as does your analysis above Ram).

> 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: 0.90.4
>
>         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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