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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-926) ContainerManagerProtcol APIs should take in requests for multiple containers
Date Tue, 16 Jul 2013 23:54:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13710498#comment-13710498
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Alejandro Abdelnur commented on YARN-926:
-----------------------------------------

[~vinodkv], what is exactly the use case for this? most of the time I would expect that newly
avail container allocations for an AM, in a heartbeat, are scattered through out the cluster
with seldom overlaps on the same node. Wondering how often you are seeing this overlap (and
how many containers) to justify a multiple containers support. Also, the current response
is 'void', just an ACK, what would be the response for multiple containers. BTW, I'm not opposed,
just wondering if we really need it.

Finally, if this ends up being the last standing blocker, we should not block the release
because of it.
                
> ContainerManagerProtcol APIs should take in requests for multiple containers
> ----------------------------------------------------------------------------
>
>                 Key: YARN-926
>                 URL: https://issues.apache.org/jira/browse/YARN-926
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Blocker
>
> AMs typically have to launch multiple containers on a node and the current single container
APIs aren't helping. We should have all the APIs take in multiple requests and return multiple
responses.
> The client libraries could expose both the single and multi-container requests.

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