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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8095) Allow disable non-exclusive allocation
Date Fri, 30 Mar 2018 08:12:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16420270#comment-16420270
] 

Weiwei Yang commented on YARN-8095:
-----------------------------------

Hi [~kyungwan nam]

According to the node label document
{quote}Exclusive: containers will be allocated to nodes with exactly match node partition.
(e.g. asking partition=“x” will be allocated to node with partition=“x”, asking DEFAULT
partition will be allocated to DEFAULT partition nodes).
{quote}
if you set an {{exclusive}} label to the queue for your long-lived apps, would that help to
prevent sharing resource with others?

> Allow disable non-exclusive allocation
> --------------------------------------
>
>                 Key: YARN-8095
>                 URL: https://issues.apache.org/jira/browse/YARN-8095
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacity scheduler
>    Affects Versions: 2.8.3
>            Reporter: kyungwan nam
>            Priority: Major
>
> We have 'longlived' Queue, which is used for long-lived apps.
> In situation where default Partition resources are not enough, containers for long-lived
app can be allocated to sharable Partition.
> Since then, containers for long-lived app can be easily preempted.
> We don’t want long-lived apps to be killed abruptly.
> Currently, non-exclusive allocation can happen regardless of whether the queue is accessible
to the sharable Partition.
> It would be good if non-exclusive allocation can be disabled at queue level.



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