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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:
---------------------------------
Description:
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.
Additional stop/destroy behavior improvements include:
* destroying a saved (not launched or started) service
* destroying a stopped service
* destroying a destroyed service
*
was: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.
> Delete registry entries from ZK on ServiceClient stop and clean up
> stop/destroy behavior
> ----------------------------------------------------------------------------------------
>
> 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.
> Additional stop/destroy behavior improvements include:
> * destroying a saved (not launched or started) service
> * destroying a stopped service
> * destroying a destroyed service
> *
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