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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3214) Add non-exclusive node labels
Date Thu, 05 Mar 2015 18:20:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349194#comment-14349194
] 

Naganarasimha G R commented on YARN-3214:
-----------------------------------------

Thanks for the clarification [~wangda],

> Add non-exclusive node labels 
> ------------------------------
>
>                 Key: YARN-3214
>                 URL: https://issues.apache.org/jira/browse/YARN-3214
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler, resourcemanager
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>         Attachments: Non-exclusive-Node-Partition-Design.pdf
>
>
> Currently node labels partition the cluster to some sub-clusters so resources cannot
be shared between partitioned cluster. 
> With the current implementation of node labels we cannot use the cluster optimally and
the throughput of the cluster will suffer.
> We are proposing adding non-exclusive node labels:
> 1. Labeled apps get the preference on Labeled nodes 
> 2. If there is no ask for labeled resources we can assign those nodes to non labeled
apps
> 3. If there is any future ask for those resources , we will preempt the non labeled apps
and give them back to labeled apps.



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