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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-427) ZooKeeper server unexpectedly high CPU utilisation
Date Thu, 18 Jun 2009 20:22:07 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721454#action_12721454

Hadoop QA commented on ZOOKEEPER-427:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 786156.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-vesta.apache.org/124/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-vesta.apache.org/124/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-vesta.apache.org/124/console

This message is automatically generated.

> ZooKeeper server unexpectedly high CPU utilisation
> --------------------------------------------------
>                 Key: ZOOKEEPER-427
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-427
>             Project: Zookeeper
>          Issue Type: Bug
>    Affects Versions: 3.1.1
>         Environment: Linux: 2.6.18-92.1.18.el5 #1 SMP Wed Nov 12 09:19:49 EST 2008 x86_64
x86_64 x86_64 GNU/Linux
> java version "1.6.0_03"
> Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
> Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_03-b05, mixed mode)
>            Reporter: Satish Bhatti
>            Assignee: Flavio Paiva Junqueira
>            Priority: Blocker
>             Fix For: 3.2.0
>         Attachments: zk_quorum_recv_eof.patch, zoo.cfg, ZOOKEEPER-427.patch, zookeeper-jstack.log,
> I am running a 5 node ZooKeeper cluster and I noticed that one of them has very high
CPU usage:
>  6883  infact       22   0   725m  41m  4188 S   95       0.5          5671:54  java
> It is not "doing anything" application-wise at this point, so I was wondering why the
heck it's using up so much CPU.

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