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From "Bibin A Chundatt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-6702) Zk connection leak during activeService fail if embedded elector is not curator
Date Fri, 09 Jun 2017 14:15:18 GMT
Bibin A Chundatt created YARN-6702:
--------------------------------------

             Summary: 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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