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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5390) Federation Subcluster Resolver
Date Mon, 01 Aug 2016 22:07:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15402909#comment-15402909

Wangda Tan commented on YARN-5390:


I took a quick look at the patch attached,

I'm not sure if you can provide some ideas about:
- How these interfaces will be used.
- How/Who to manage lifecycle of SubResolver (initialize, update/reload)
- Is it better to use non-static interface in this patch or static interfaces like RackResolver.

It will be better to have some examples to show how this resolver will be used by other components.
I checked patches attached to YARN-5323, YARN-5324, YARN-5325, they look like not updated
to this patch. 


> Federation Subcluster Resolver
> ------------------------------
>                 Key: YARN-5390
>                 URL: https://issues.apache.org/jira/browse/YARN-5390
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Carlo Curino
>            Assignee: Ellen Hui
>         Attachments: YARN-5390-YARN-2915.v0.patch, YARN-5390-YARN-2915.v1.patch, YARN-5390-YARN-2915.v2.patch
> This JIRA tracks effort to create a mechanism to resolve nodes/racks resource names to
sub-cluster identifiers. This is needed by the federation policies in YARN-5323, YARN-5324,
YARN-5325 to operate correctly.

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