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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-314) Allow resource requests of different sizes at the same priority and locality
Date Fri, 04 Jan 2013 17:54:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544068#comment-13544068
] 

Bikas Saha commented on YARN-314:
---------------------------------

To be clear, I think there is no issue in requesting resources of different sizes (at same
priority and location). Its possible to express that in the protocol. The issue is that AppSchedulingInfo
loses that information by storing ResourceRequest only by priority and location instead of
priority, location and size.
                
> Allow resource requests of different sizes at the same priority and locality
> ----------------------------------------------------------------------------
>
>                 Key: YARN-314
>                 URL: https://issues.apache.org/jira/browse/YARN-314
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>             Fix For: 2.0.3-alpha
>
>
> Currently, resource requests for the same container and locality are expected to all
be the same size.
> While it it doesn't look like it's needed for apps currently, and can be circumvented
by specifying different priorities if absolutely necessary, it seems to me that the ability
to request containers with different resource requirements at the same priority level should
be there for the future and for completeness sake.

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