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Posted to dev@zookeeper.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2010/08/02 22:01:16 UTC
[jira] Commented: (ZOOKEEPER-795) eventThread isn't shutdown after
a connection "session expired" event coming
[ https://issues.apache.org/jira/browse/ZOOKEEPER-795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894679#action_12894679 ]
Hadoop QA commented on ZOOKEEPER-795:
-------------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12450795/ZOOKEEPER-795.patch
against trunk revision 980576.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+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 warnings.
+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-h7.grid.sp2.yahoo.net/101/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h7.grid.sp2.yahoo.net/101/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Zookeeper-Patch-h7.grid.sp2.yahoo.net/101/console
This message is automatically generated.
> eventThread isn't shutdown after a connection "session expired" event coming
> ----------------------------------------------------------------------------
>
> Key: ZOOKEEPER-795
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-795
> Project: Zookeeper
> Issue Type: Bug
> Components: java client
> Affects Versions: 3.3.1
> Environment: ubuntu 10.04
> Reporter: mathieu barcikowski
> Priority: Blocker
> Fix For: 3.3.2, 3.4.0
>
> Attachments: ExpiredSessionThreadLeak.java, ZOOKEEPER-795.patch, ZOOKEEPER-795.patch
>
>
> Hi,
> I notice a problem with the eventThread located in ClientCnxn.java file.
> The eventThread isn't shutdown after a connection "session expired" event coming (i.e. never receive EventOfDeath).
> When a session timeout occurs and the session is marked as expired, the connexion is fully closed (socket, SendThread...) expect for the eventThread.
> As a result, if i create a new zookeeper object and connect through it, I got a zombi thread which will never be kill (as for the previous zookeeper object, the state is already close, calling close again don't do anything).
> So everytime I will create a new zookeeper connection after a expired session, I will have a one more zombi EventThread.
> How to reproduce :
> - Start a zookeeper client connection in debug mode
> - Pause the jvm enough time to the expired event occur
> - Watch for example with jvisualvm the list of threads, the sendThread is succesfully killed, but the EventThread go to wait state for a infinity of time
> - if you reopen a new zookeeper connection, and do again the previous steps, another EventThread will be present in infinite wait state
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