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https://issues.apache.org/jira/browse/YARN-10856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siddharth Ahuja reassigned YARN-10856:
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Assignee: (was: Siddharth Ahuja)
> Prevent ATS v2 health check REST API call if the ATS service itself is
> disabled.
> --------------------------------------------------------------------------------
>
> Key: YARN-10856
> URL: https://issues.apache.org/jira/browse/YARN-10856
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn-ui-v2
> Affects Versions: 3.3.1
> Reporter: Siddharth Ahuja
> Priority: Major
>
> Currently, even if {{yarn.timeline-service.enabled}} is disabled, the UI2
> code still goes ahead and performs timeline health check REST API calls, see
> [1], [2] and [3].
> This is un-necessary and can cause slowness issues with RM UI2 page loading
> if a firewall is dropping packets on the ATS v2 port (as it is not meant to
> be available e.g. 8188/8190) in the background and the timeout is not yet hit.
> This ATSv2 health check REST API call is redundant and should be prevented if
> the service itself is disabled.
> [1]
> https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/adapters/timeline-health.js
> [2]
> https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/routes/application.js#L34
> [3]
> https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/routes/yarn-app/logs.js#L40
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