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https://issues.apache.org/jira/browse/HBASE-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068197#comment-13068197
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ramkrishna.s.vasudevan commented on HBASE-4101:
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@Ted, I tried running the TestScannerTimeOut.java locally.
With or without patch the test is running fine.  Some problems comes attimes in 
the tear down (but all assertions are passing).

Also the change is pertaining to the proritycompactionqueue but the test case 
as far I saw it is dealing with scanning.
Do you find any other problem for the failure of testcase ?


> 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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