[jira] [Commented] (YARN-4056) Bundling: Searching for multiple containers in a single pass over {queues, applications, priorities}

["Karthik Kambatla (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-4056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14698915#comment-14698915 ] 

Karthik Kambatla commented on YARN-4056:
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Is this similar to {{assignMultiple}} in {{FairScheduler}}?

> Bundling: Searching for multiple containers in a single pass over {queues, applications, priorities}
> ----------------------------------------------------------------------------------------------------
>
>                 Key: YARN-4056
>                 URL: https://issues.apache.org/jira/browse/YARN-4056
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: capacityscheduler, resourcemanager, scheduler
>            Reporter: Srikanth Kandula
>            Assignee: Robert Grandl
>         Attachments: bundling.docx
>
>
> More than one container is allocated on many NM heartbeats. Yet, the current scheduler allocates exactly one container per iteration over {{queues, applications, priorities}}. When there are many queues, applications, or priorities allocating only one container per iteration can  needlessly increase the duration of the NM heartbeat.
>  
> In this JIRA, we propose bundling. That is, allow arbitrarily many containers to be allocated in a single iteration over {{queues, applications and priorities}}.



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