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Posted to yarn-issues@hadoop.apache.org by "Arun Suresh (JIRA)" <ji...@apache.org> on 2016/06/15 05:07:09 UTC
[jira] [Assigned] (YARN-5255) Move ResourceRequest expansion for
Delay Scheduling to the Scheduler
[ https://issues.apache.org/jira/browse/YARN-5255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun Suresh reassigned YARN-5255:
---------------------------------
Assignee: Arun Suresh
> Move ResourceRequest expansion for Delay Scheduling to the Scheduler
> --------------------------------------------------------------------
>
> Key: YARN-5255
> URL: https://issues.apache.org/jira/browse/YARN-5255
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Arun Suresh
> Assignee: Arun Suresh
>
> YARN-4879 proposes to enhance the Allocate Request by introducing a way to explicitly identify a ResourceRequest explicitly
> Currently, if relaxLocality == true, a Node specific request is expanded to rack and *ANY* request by the {{AMRMClient}} before being sent to the Scheduler. The requires the 3 copies to perform locality specific delay scheduling.
> It would be better to perform the expansion in the Scheduler itself, rather than the client, since:
> # The expansion is not really specified in the ApplicationMasterProtocol, a non-java client will have to duplicate the expansion logic.
> # Refactor out a lot of unnecessary code in the {{AMRMClientImpl}}
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