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https://issues.apache.org/jira/browse/YARN-8489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16650816#comment-16650816
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Wangda Tan commented on YARN-8489:
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Updated title/description, dropped the pluggable part. To me the pluggable is
best-to-have, but the dominant component is definitely required for many jobs
which have master concept, or services some component is not tolerable to
failures.
> Need to support "dominant" component concept inside YARN service
> ----------------------------------------------------------------
>
> Key: YARN-8489
> URL: https://issues.apache.org/jira/browse/YARN-8489
> Project: Hadoop YARN
> Issue Type: Task
> Components: yarn-native-services
> Reporter: Wangda Tan
> Priority: Major
>
> Existing YARN service support termination policy for different restart
> policies. For example ALWAYS means service will not be terminated. And NEVER
> means if all component terminated, service will be terminated.
> There're some jobs/services need different policy. For example, if Tensorflow
> master component terminated (regardless of succeed or finished), we need to
> terminate whole training job regardless or other states of other components.
> The name "dominant" might not be most appropriate , we can figure out better
> names. But in simple, it means, a dominant component which final state will
> determine job's final state regardless of other components.
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