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From "Joep Rottinghuis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6095) create a REST API that returns the clusters for a given app id
Date Tue, 17 Jan 2017 19:27:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-6095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15826652#comment-15826652
] 

Joep Rottinghuis commented on YARN-6095:
----------------------------------------

Just to make sure we capture part of the discussion at the end of YARN-5378:
For a cloud environment, clusters may be ephemeral and come and go relatively quickly. For
that use-case it is desirable to enumerate clusters. I think that is still a little different
than this specific jira, which would take an app ID and return the list of clusters that this
app ID occurred on. Note that in the vast majority of cases this would return only 1 cluster
(or none I suppose). The use-case of enumerating clusters should use useful without _any_
arguments.
That can happen in two ways: either strongly write this for every app, which means that we
keep inserting / overwriting, or process this after the fact in the back-end. In either case,
that should be a separate jira from this one imho, unless I mis-understood the discussion
on YARN-5378. cc [~rohithsharma] [~varun_saxena] [~sunilg]

> create a REST API that returns the clusters for a given app id
> --------------------------------------------------------------
>
>                 Key: YARN-6095
>                 URL: https://issues.apache.org/jira/browse/YARN-6095
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>
> It would be good to have a timeline service REST endpoint that can return the list of
clusters for a given app id. This becomes possible after YARN-5378 is in.



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