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Posted to yarn-issues@hadoop.apache.org by "Sunil G (JIRA)" <ji...@apache.org> on 2016/07/15 06:38:20 UTC
[jira] [Assigned] (YARN-5342) Improve non-exclusive node partition
resource allocation in Capacity Scheduler
[ https://issues.apache.org/jira/browse/YARN-5342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sunil G reassigned YARN-5342:
-----------------------------
Assignee: Sunil G (was: Wangda Tan)
> Improve non-exclusive node partition resource allocation in Capacity Scheduler
> ------------------------------------------------------------------------------
>
> Key: YARN-5342
> URL: https://issues.apache.org/jira/browse/YARN-5342
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Wangda Tan
> Assignee: Sunil G
> Attachments: YARN-5342.1.patch
>
>
> In the previous implementation, one non-exclusive container allocation is possible when the missed-opportunity >= #cluster-nodes. And missed-opportunity will be reset when container allocated to any node.
> This will slow down the frequency of container allocation on non-exclusive node partition: *When a non-exclusive partition=x has idle resource, we can only allocate one container for this app in every X=nodemanagers.heartbeat-interval secs for the whole cluster.*
> In this JIRA, I propose a fix to reset missed-opporunity only if we have >0 pending resource for the non-exclusive partition OR we get allocation from the default partition.
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