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Posted to yarn-issues@hadoop.apache.org by "Billie Rinaldi (JIRA)" <ji...@apache.org> on 2018/03/26 19:11:00 UTC

[jira] [Assigned] (YARN-7984) Delete registry entries from ZK on ServiceClient stop

     [ https://issues.apache.org/jira/browse/YARN-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Billie Rinaldi reassigned YARN-7984:
------------------------------------

    Assignee: Billie Rinaldi

> 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
>
> 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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