You are viewing a plain text version of this content. The canonical link for it is here.
Posted to yarn-issues@hadoop.apache.org by "Jonathan Hung (JIRA)" <ji...@apache.org> on 2016/10/27 18:53:00 UTC
[jira] [Updated] (YARN-4963) capacity scheduler: Make number of
OFF_SWITCH assignments per heartbeat configurable
[ https://issues.apache.org/jira/browse/YARN-4963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Hung updated YARN-4963:
--------------------------------
Labels: oct16-easy (was: )
> capacity scheduler: Make number of OFF_SWITCH assignments per heartbeat configurable
> ------------------------------------------------------------------------------------
>
> Key: YARN-4963
> URL: https://issues.apache.org/jira/browse/YARN-4963
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacityscheduler
> Affects Versions: 2.7.2, 3.0.0-alpha1
> Reporter: Nathan Roberts
> Assignee: Nathan Roberts
> Labels: oct16-easy
> Attachments: YARN-4963.001.patch, YARN-4963.002.patch, YARN-4963.003.patch
>
>
> Currently the capacity scheduler will allow exactly 1 OFF_SWITCH assignment per heartbeat. With more and more non MapReduce workloads coming along, the degree of locality is declining, causing scheduling to be significantly slower. It's still important to limit the number of OFF_SWITCH assignments to avoid densely packing OFF_SWITCH containers onto nodes.
> Proposal is to add a simple config that makes the number of OFF_SWITCH assignments configurable.
> Will upload candidate patch shortly.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org