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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4495) add a way to tell AM container increase/decrease request is invalid
Date Wed, 30 Dec 2015 20:31:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-4495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15075380#comment-15075380

Wangda Tan commented on YARN-4495:

Thanks for investigations, [~sandflee].

I feel we should make this JIRA to be more generic helpful:
- Current any issue of regular resource request becomes InvalidResourceRequestException, but
AM doesn't know which resource request is failed. Similar to change container resource request.
- Some resource request / change container resource request could be rejected after it added
to scheduler. (For example, queue's accessible-node-label changed could cause some original
valid resource request changes to invalid.)
- Maybe we can add a "RejectedResourceRequest" proto to AllocateResponse, and it contains
list of rejected regular resource request, and list of increase/decrease container request.

Since it is an API change, please expect that more time/discussion required to settle it down.
Set target version to 2.9.

> add a way to tell AM container increase/decrease request is invalid
> -------------------------------------------------------------------
>                 Key: YARN-4495
>                 URL: https://issues.apache.org/jira/browse/YARN-4495
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: sandflee
>         Attachments: YARN-4495.01.patch
> now RM may pass InvalidResourceRequestException to AM or just ignore the change request,
the former will cause AMRMClientAsync down. and the latter will leave AM waiting for the relay.

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