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https://issues.apache.org/jira/browse/YARN-3924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694738#comment-14694738
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Karthik Kambatla commented on YARN-3924:
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cc: [~rkanter]
IIRR, Oozie doesn't rely on the jobTracker to connect to the RMs. It just uses
the client config available to it. Yarn Client takes care of routing the
request to the appropriate RM. If the client is unable to route to the
appropriate RM, there is no Active RM in the list of RMs specified in the
config.
A more informative error message might be enough here?
> Submitting an application to standby ResourceManager should respond better
> than Connection Refused
> --------------------------------------------------------------------------------------------------
>
> Key: YARN-3924
> URL: https://issues.apache.org/jira/browse/YARN-3924
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Reporter: Dustin Cote
> Assignee: Ajith S
> Priority: Minor
>
> When submitting an application directly to a standby resource manager, the
> resource manager responds with 'Connection Refused' rather than indicating
> that it is a standby resource manager. Because the resource manager is aware
> of its own state, I feel like we can have the 8032 port open for standby
> resource managers and reject the request with something like 'Cannot process
> application submission from this standby resource manager'.
> This would be especially helpful for debugging oozie problems when users put
> in the wrong address for the 'jobtracker' (i.e. they don't put the logical RM
> address but rather point to a specific resource manager).
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