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https://issues.apache.org/jira/browse/YARN-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753060#comment-13753060
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Karthik Kambatla commented on YARN-1098:
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While working on the patch, realized that the stateless services still need to
be aware of HA. When HA is enabled and the RM is in Standby mode, the
client-facing services among the stateless services should respond to the
client that they are not the Active.
> Separate out stateless services from stateful services in the RM
> ----------------------------------------------------------------
>
> Key: YARN-1098
> URL: https://issues.apache.org/jira/browse/YARN-1098
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.1.0-beta
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Labels: ha
> Attachments: yarn-1098-approach.patch, yarn-1098-approach.patch
>
>
> From discussion on YARN-1027, it makes sense to separate out services that
> are stateful and stateless. The stateless services can be HA-agnostic and be
> run perennially irrespective of whether the RM is in Active/Standby state,
> while the stateful services need to be aware of HA and be started on
> transitionToActive() and completely shutdown on transitionToStandby().
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