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From "Billie Rinaldi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-7984) Delete registry entries from ZK on ServiceClient stop
Date Tue, 27 Feb 2018 17:31:00 GMT
Billie Rinaldi created YARN-7984:

             Summary: Delete registry entries from ZK on ServiceClient stop
                 Key: YARN-7984
                 URL: https://issues.apache.org/jira/browse/YARN-7984
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn-native-services
            Reporter: Billie Rinaldi

The service records written to the registry are removed by ServiceClient on a destroy call,
but not on a stop call. The service AM does have some code to clean up the registry entries
when component instances are stopped, but if the AM is killed before it has a chance to perform
the cleanup, these entries will be left in ZooKeeper. It would be better to clean these up
in the stop call, so that RegistryDNS does not provide lookups for containers that don't exist.

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