Billie Rinaldi created YARN-7984:
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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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