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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10563) Set name for FlushHandler thread
Date Wed, 19 Feb 2014 02:21:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13905030#comment-13905030
] 

Hudson commented on HBASE-10563:
--------------------------------

FAILURE: Integrated in HBase-TRUNK-on-Hadoop-1.1 #93 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-1.1/93/])
HBASE-10563 Set name for FlushHandler thread (Himanshu Vashishtha) (mbertozzi: rev 1569370)
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.java


> Set name for FlushHandler thread
> --------------------------------
>
>                 Key: HBASE-10563
>                 URL: https://issues.apache.org/jira/browse/HBASE-10563
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.98.0
>            Reporter: Himanshu Vashishtha
>            Assignee: Himanshu Vashishtha
>             Fix For: 0.96.2, 0.98.1, 0.99.0
>
>         Attachments: 10563-v1.patch
>
>
> The FlushHandler thread in MemStoreFlusher class uses default thread name (Thread -XX).
This is un-intentional and also confusing in case when there are multiple handlers.
> Current Stack trace looks like this:
> {code}
> "Thread-18" prio=10 tid=0x00007f4e8cb21800 nid=0x356e waiting on condition [0x00007f4e6d49a000]
>    java.lang.Thread.State: TIMED_WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x00000004e5684b00> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:196)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
> 	at java.util.concurrent.DelayQueue.poll(DelayQueue.java:201)
> 	at java.util.concurrent.DelayQueue.poll(DelayQueue.java:39)
> 	at org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:228)
> 	at java.lang.Thread.run(Thread.java:662)
> {code}



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