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From "Subru Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6234) Support multiple attempts on the node when AMRMProxy is enabled
Date Wed, 12 Apr 2017 20:18:41 GMT

    [ https://issues.apache.org/jira/browse/YARN-6234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966547#comment-15966547
] 

Subru Krishnan commented on YARN-6234:
--------------------------------------

Thanks for your response [~botong]. Essentially there are 2 scenarios:
  1. Second attempt on same node - In this case, UAMs on secondaries should not fail. Instead
they should simply re-register the _original_ attempt using the {{AMRMToken}}. In essence,
for UAMs, the process is similar to RM failover.
  2. Second attempt on different node - YARN-6128 should address this use case.

> Support multiple attempts on the node when AMRMProxy is enabled
> ---------------------------------------------------------------
>
>                 Key: YARN-6234
>                 URL: https://issues.apache.org/jira/browse/YARN-6234
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: amrmproxy, federation, nodemanager
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>            Reporter: Subru Krishnan
>            Assignee: Giovanni Matteo Fumarola
>         Attachments: YARN-6234-YARN-2915.v1.patch
>
>
> Currently {{AMRMProxy}} initializes an interceptor chain pipeline for every active AM
in the node but it doesn't clean up & reinitialize correctly if there's a second attempt
for any AM in the same node. This jira is to track the changes required to support multiple
attempts on the node when AMRMProxy is enabled.



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