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From "Craig Condit (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-9012) NPE in scheduler UI when min-capacity is not configured
Date Mon, 20 May 2019 23:35:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844389#comment-16844389
] 

Craig Condit commented on YARN-9012:
------------------------------------

[~sunilg] Can you review this?

> NPE in scheduler UI when min-capacity is not configured
> -------------------------------------------------------
>
>                 Key: YARN-9012
>                 URL: https://issues.apache.org/jira/browse/YARN-9012
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 3.1.1
>            Reporter: tianjuan
>            Assignee: Craig Condit
>            Priority: Major
>         Attachments: YARN-9012.001.patch
>
>
> I encountered the following while reviewing and testing branch YARN-5881.
> The design document from YARN-5881 says that for max-capacity:
> {quote} For any queue: If min-resource not set, it is automatically set to 0. (Same
as today) 
> {quote}
> When I try leaving blank {{yarn.scheduler.capacity.<queue-path>.capacity}}, the
RMUI scheduler page refuses to render. It looks like it's in {{CapacitySchedulerPage$ LeafQueueInfoBlock}}:
> {noformat}
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NullPointerException
>  at org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$LeafQueueInfoBlock.renderQueueCapacityInfo(CapacitySchedulerPage.java:163)
>  at org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$LeafQueueInfoBlock.renderLeafQueueInfoWithPartition(CapacitySchedulerPage.java:108)
>  at org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$LeafQueueInfoBlock.render(CapacitySchedulerPage.java:97)
>  at org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
>  at org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:79)
>  at org.apache.hadoop.yarn.webapp.View.render(View.java:243)
>  at org.apache.hadoop.yarn.webapp.view.HtmlBlock$Block.subView(HtmlBlock.java:43)
>  at org.apache.hadoop.yarn.webapp.hamlet2.HamletImpl$EImp._v(HamletImpl.java:117)
>  at org.apache.hadoop.yarn.webapp.hamlet2.Hamlet$LI.__(Hamlet.java:7709)
>  at org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$QueueBlock.render(CapacitySchedulerPage.java:342){noformat}



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