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Posted to yarn-issues@hadoop.apache.org by "Eric Yang (JIRA)" <ji...@apache.org> on 2018/06/14 20:07:00 UTC

[jira] [Created] (YARN-8428) YARN service has ZooKeeper connection leaks

Eric Yang created YARN-8428:
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             Summary: YARN service has ZooKeeper connection leaks
                 Key: YARN-8428
                 URL: https://issues.apache.org/jira/browse/YARN-8428
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn-native-services
    Affects Versions: 3.1.0
            Reporter: Eric Yang


There are two leaks discovered during stress test.  First, YARN service application master uses RegistryDNS to create DNS record for YARN service.  Data is first persisted on ZooKeeper, and RegistryDNS will lookup data in ZooKeeper to create DNS entries.  YARN service AM does not close ZooKeeper connection after the record has been created.  Second, when deleting DNS record from ZooKeeper, ZooKeeper connection is left open.



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