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Date: Mon, 23 Jan 2017 12:11:26 +0000 (UTC)
From: "Rohith Sharma K S (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
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Subject: [jira] [Commented] (YARN-6105) Support for new REST end point
 /clusterids
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archived-at: Mon, 23 Jan 2017 12:11:32 -0000


    [ https://issues.apache.org/jira/browse/YARN-6105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834350#comment-15834350 ] 

Rohith Sharma K S commented on YARN-6105:
-----------------------------------------

In cloud, it is not guaranteed that only one cluster can run at given point of time. I discussed with cloud team today, constant clusterId or storing it separately as info does not work for them. Every cluster has its own Id to identify uniqueness. There could be 'N' clusterIds but those are independent and unique.
So, */clusterids*(with daterange and pagination support) will become more important for shared services such as YARN web UI, Tez Web UI or Spar Web UI or MR Web UI.

> Support for new REST end point /clusterids
> ------------------------------------------
>
>                 Key: YARN-6105
>                 URL: https://issues.apache.org/jira/browse/YARN-6105
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Rohith Sharma K S
>
> As discussed in YARN-5378 and YARN-6095, it is required to have */clusterids* that returns list of clusterids that back end has is useful. 
> Use case : In cloud, clusters are arbitrarily spin up and destroyed. Each cluster has its own clusterId which UI never knows about it. To all those newly spin up cluster, same ATS server has been used. And sam web UI has been used. Admin can select the clusterId and navigate to any pages. So, it is worth to list ClusterId's from ATS


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