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https://issues.apache.org/jira/browse/YARN-4414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15089339#comment-15089339
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Chang Li commented on YARN-4414:
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Hi [~xinxianyin], RM HA already disables IPC retries. Also client should try
to connect to RM really hard because it's catastrophic failure if it doesn't.
Failure to connect to a NM is not. I think we should just make change for
NMProxy in this jira.
> Nodemanager connection errors are retried at multiple levels
> ------------------------------------------------------------
>
> Key: YARN-4414
> URL: https://issues.apache.org/jira/browse/YARN-4414
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.7.1, 2.6.2
> Reporter: Jason Lowe
> Assignee: Chang Li
> Attachments: YARN-4414.1.2.patch, YARN-4414.1.2.patch,
> YARN-4414.1.3.patch, YARN-4414.1.patch, YARN-4414.2.patch
>
>
> This is related to YARN-3238. Ran into more scenarios where connection
> errors are being retried at multiple levels, like NoRouteToHostException.
> The fix for YARN-3238 was too specific, and I think we need a more general
> solution to catch a wider array of connection errors that can occur to avoid
> retrying them both at the RPC layer and at the NM proxy layer.
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