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From "Bibin A Chundatt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6702) Zk connection leak during activeService fail if embedded elector is not curator
Date Fri, 09 Jun 2017 14:18:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-6702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044479#comment-16044479
] 

Bibin A Chundatt commented on YARN-6702:
----------------------------------------

cc:/ [~rohithsharma] , [~jianhe]

> 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
>            Priority: Critical
>
> {{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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