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From "Subru Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6484) [Documentation] Documenting the YARN Federation feature
Date Thu, 25 May 2017 22:02:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-6484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025456#comment-16025456
] 

Subru Krishnan commented on YARN-6484:
--------------------------------------

Thanks [~curino] for the solid documentation. I have a few minor comments:
  * Can you please add a sequence diagram for the *Job execution flow* as that'll make it
much easier to understand.
  * It'll be good if we can also reuse the {{AMRMProxy}} internals diagram from our Hadoop
summit talk.
  * We should call out that the _yarn.resourcemanager.cluster-id_ is the same as what's used
for RM HA, i.e. we simply reuse the config.
  * I feel we should clarify that the _yarn.resourcemanager.epoch_ is unique per sub-cluster,
_yarn.resourcemanager.cluster-id_ and having increments of 1000 will provide practical safety
from ContainerId clashes.
  * NIt: {{Federation.md}} has a whitespace at the end.

> [Documentation] Documenting the YARN Federation feature
> -------------------------------------------------------
>
>                 Key: YARN-6484
>                 URL: https://issues.apache.org/jira/browse/YARN-6484
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>    Affects Versions: YARN-2915
>            Reporter: Subru Krishnan
>            Assignee: Carlo Curino
>         Attachments: YARN-6484-YARN-2915.v0.patch, YARN-6484-YARN-2915.v1.patch, YARN-6484-YARN-2915.v2.patch
>
>
> We should document the high level design and configuration to enable YARN Federation



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