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Posted to yarn-issues@hadoop.apache.org by "Robert Kanter (JIRA)" <ji...@apache.org> on 2017/10/03 16:55:00 UTC
[jira] [Commented] (YARN-7207) Cache the local host name when
getting application list in RM
[ https://issues.apache.org/jira/browse/YARN-7207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189957#comment-16189957 ]
Robert Kanter commented on YARN-7207:
-------------------------------------
[~aw], did you have any more comments? Otherwise, I think [~yufeigu] can commit this.
> Cache the local host name when getting application list in RM
> -------------------------------------------------------------
>
> Key: YARN-7207
> URL: https://issues.apache.org/jira/browse/YARN-7207
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: RM
> Affects Versions: 3.1.0
> Reporter: Yufei Gu
> Assignee: Yufei Gu
> Attachments: YARN-7207.001.patch, YARN-7207.002.patch
>
>
> {{getLocalHostName()}} is invoked for generating the report for each application, which means it is called 1000 times for each {{getApplications()}} if there are 1000 apps in RM. Some user got a performance issue when {{getLocalHostName()}} is slow under some network envs.
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