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Posted to yarn-issues@hadoop.apache.org by "Bibin A Chundatt (JIRA)" <ji...@apache.org> on 2017/06/14 06:15:00 UTC

[jira] [Comment Edited] (YARN-6702) Zk connection leak during activeService fail if embedded elector is not curator

    [ https://issues.apache.org/jira/browse/YARN-6702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16048103#comment-16048103 ] 

Bibin A Chundatt edited comment on YARN-6702 at 6/14/17 6:14 AM:
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Thank you [~rohithsharma] for providing patch.

Since AbstractService stops the Service on exception the closeInternal() modification will close the connection created inside the ZKRMStateStore .

Is it possible to add a testcase for the same? 



was (Author: bibinchundatt):
[~rohithsharma]
Thank you for providing patch. Is it possible to add a testcase for the same?


> Zk connection leak during activeService fail if embedded elector is not curator
> -------------------------------------------------------------------------------
>
>                 Key: YARN-6702
>                 URL: https://issues.apache.org/jira/browse/YARN-6702
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Bibin A Chundatt
>            Assignee: Rohith Sharma K S
>            Priority: Critical
>         Attachments: YARN-6702.01.patch
>
>
> {{ResourceManager#transitionToActive}} startActiveService Failure the active services are reinitialized.
> {code}
>     this.rmLoginUGI.doAs(new PrivilegedExceptionAction<Void>() {
>       @Override
>       public Void run() throws Exception {
>         try {
>           startActiveServices();
>           return null;
>         } catch (Exception e) {
>           reinitialize(true);
>           throw e;
>         }
>       }
>     });
> {code}
> {{ZKRMStateStore#initInternal}} will create another ZK connection.
> {code}
>     curatorFramework = resourceManager.getCurator();
>     if (curatorFramework == null) {
>       curatorFramework = resourceManager.createAndStartCurator(conf);
>     }
> {code}
> {quote}
> secureuser@vm1:/opt/hadoop/release/hadoop/sbin> netstat -aen | grep 2181
> tcp        0      0 192.168.56.101:49222    192.168.56.103:2181     ESTABLISHED 1004       31984      
> tcp        0      0 192.168.56.101:46016    192.168.56.103:2181     ESTABLISHED 1004       26120      
> tcp        0      0 192.168.56.101:50918    192.168.56.103:2181     ESTABLISHED 1004       34761      
> tcp        0      0 192.168.56.101:49598    192.168.56.103:2181     ESTABLISHED 1004       32483      
> tcp        0      0 192.168.56.101:49472    192.168.56.103:2181     ESTABLISHED 1004       32364      
> tcp        0      0 192.168.56.101:50708    192.168.56.103:2181     ESTABLISHED 1004       34310  
> {quote}



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