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https://issues.apache.org/jira/browse/YARN-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Billie Rinaldi updated YARN-7984:
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Attachment: YARN-7984.2.patch
> 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
> Assignee: Billie Rinaldi
> Priority: Critical
> Attachments: YARN-7984.1.patch, YARN-7984.2.patch
>
>
> 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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