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https://issues.apache.org/jira/browse/YARN-7120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16150757#comment-16150757
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Jason Lowe commented on YARN-7120:
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Ah sorry, I misread the patch. We're not setting the container ID to null
rather leaving it as it's default "N/A." I still wonder about the utility of
showing the user an entry without a container ID, but we may have a node ID and
other entries that could provide clues so probably still worth printing
something.
+1 lgtm. I'll commit this shortly.
> CapacitySchedulerPage NPE in "Aggregate scheduler counts" section
> -----------------------------------------------------------------
>
> Key: YARN-7120
> URL: https://issues.apache.org/jira/browse/YARN-7120
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.9.0, 2.8.1, 3.0.0-alpha3
> Reporter: Eric Payne
> Assignee: Eric Payne
> Priority: Minor
> Attachments: Aggregate Scheduler Counts All Sections.png, Aggregate
> Scheduler Counts Bottom Cut Off.png, YARN-7120.001.patch
>
>
> The problem manifests itself by having the bottom part of the "Aggregated
> scheduler counts" section cut off on the GUI and an NPE in the RM log.
> {noformat}
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$HealthBlock.render(CapacitySchedulerPage.java:558)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:79)
> at org.apache.hadoop.yarn.webapp.View.render(View.java:235)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock$Block.subView(HtmlBlock.java:43)
> at org.apache.hadoop.yarn.webapp.hamlet2.Hamlet.__(Hamlet.java:30354)
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.CapacitySchedulerPage$QueuesBlock.render(CapacitySchedulerPage.java:478)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:79)
> at org.apache.hadoop.yarn.webapp.View.render(View.java:235)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlPage$Page.subView(HtmlPage.java:49)
> at
> org.apache.hadoop.yarn.webapp.hamlet2.HamletImpl$EImp._v(HamletImpl.java:117)
> at org.apache.hadoop.yarn.webapp.hamlet2.Hamlet$TD.__(Hamlet.java:848)
> at
> org.apache.hadoop.yarn.webapp.view.TwoColumnLayout.render(TwoColumnLayout.java:71)
> at org.apache.hadoop.yarn.webapp.view.HtmlPage.render(HtmlPage.java:82)
> at org.apache.hadoop.yarn.webapp.Controller.render(Controller.java:212)
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.RmController.scheduler(RmController.java:86)
> ... 58 more
> {noformat}
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