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From "sandflee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5031) Add a conf to disable container reservation
Date Wed, 04 May 2016 07:30:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270245#comment-15270245
] 

sandflee commented on YARN-5031:
--------------------------------

We had a gpu cluster with just one queue, 10+ machines.  most jobs run several days or weeks.

1,  if a job reserves resource on a node , it may wait days or weeks to really get the resource.
2,  to avoid starvation of large container request and other consideration , we fill up one
node then another, not spread containers to all nodes(YARN-4962), and  this behavior did't
except container reservation either.

> Add a conf to disable container reservation
> -------------------------------------------
>
>                 Key: YARN-5031
>                 URL: https://issues.apache.org/jira/browse/YARN-5031
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: sandflee
>
> in a cluster with long running services,  container reservation may starve other small
request services



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