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https://issues.apache.org/jira/browse/YARN-1434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13830129#comment-13830129
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Srikanth Kandula commented on YARN-1434:
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Sandy Ryza,
I get it up to the "receive the next container that the RM allocates". But,
why would this starve other AMs? Shouldn't the RM offer some other containers
to these other jobs if the cluster is idle?
I can see how some containers may be just tossing back and forth between the RM
and the picky job. But do not see why other jobs receive less share than they
would because of the picky job.
> Single Job can affect fairshare of others
> -----------------------------------------
>
> Key: YARN-1434
> URL: https://issues.apache.org/jira/browse/YARN-1434
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Carlo Curino
> Priority: Minor
>
> A job receiving containers and deciding not to use them and yielding them
> back in the next heartbeat could significantly affect the amount of resources
> given to other jobs.
> This is because by yielding containers back the job appears always to be
> under-capacity (more than others) so it is picked to be the next to receive
> containers.
> Observed by Robert Grandl, to be independently confirmed.
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