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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11799) AsyncProcess can get locked when running PE
Date Mon, 25 Aug 2014 10:29:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108995#comment-14108995

Nicolas Liochon commented on HBASE-11799:

On the second run, I have also this exception
2014-08-25 12:19:01,697 ERROR [SyncThread:0] server.NIOServerCnxn: Unexpected Exception:
        at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
        at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:77)
        at org.apache.zookeeper.server.NIOServerCnxn.sendBuffer(NIOServerCnxn.java:151)
        at org.apache.zookeeper.server.NIOServerCnxn.sendResponse(NIOServerCnxn.java:1081)
        at org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:170)
        at org.apache.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:169)
2014-08-25 12:19:01,697 INFO  [AM.ZK.Worker-pool2-t27] master.RegionStates: Transitioned null
to {9da7992368bde5b8a0c38ad7a80cdc5d state=SPLITTING_NEW, ts=1408961941697, server=dumas.scaledrisk.com,42674,1408961692215}

I had this exception on the master as well. I though it was the cause of the server stops,
likely I was wrong.

Still the second run completed successfully.
When I look at the jstack it seems that there is a bug in the client for sure. Trying a 3rd

> AsyncProcess can get locked when running PE
> -------------------------------------------
>                 Key: HBASE-11799
>                 URL: https://issues.apache.org/jira/browse/HBASE-11799
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.98.7
>            Reporter: Elliott Clark
>         Attachments: jstack
> On a clean checkout of 0.98.
> {code}
> mvn clean package -DskipTests
> bin/start-hbase.sh
> bin/hbase pe --nomapred randomWrite  10 1000{code}
> Everything runs fine for a while then the client hangs.
> The region server thinks that all requests have completed successfully. The PE process
is all stuck on the final flush.

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