[jira] [Commented] (YARN-10589) Improve logic of multi-node allocation

["Zhankun Tang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-10589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17276170#comment-17276170 ] 

Zhankun Tang commented on YARN-10589:
-------------------------------------

[~zhuqi], could you please review Tanu's patch too?

> Improve logic of multi-node allocation
> --------------------------------------
>
>                 Key: YARN-10589
>                 URL: https://issues.apache.org/jira/browse/YARN-10589
>             Project: Hadoop YARN
>          Issue Type: Task
>    Affects Versions: 3.3.0
>            Reporter: Tanu Ajmera
>            Assignee: Tanu Ajmera
>            Priority: Major
>         Attachments: YARN-10589-001.patch
>
>
> {code:java}
> for (String partititon : partitions) {
>  if (current++ > start) {
>  break;
>  }
>  CandidateNodeSet<FiCaSchedulerNode> candidates =
>  cs.getCandidateNodeSet(partititon);
>  if (candidates == null) {
>  continue;
>  }
>  cs.allocateContainersToNode(candidates, false);
> }{code}
> In above logic, if we have thousands of node in one partition, we will still repeatedly access all nodes of the partition thousands of times. There is no break point where if the partition is not same for the first node, it should stop checking other nodes in that partition.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org