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Posted to yarn-issues@hadoop.apache.org by "Tarun Parimi (JIRA)" <ji...@apache.org> on 2018/03/10 19:44:00 UTC
[jira] [Commented] (YARN-8022) ResourceManager UI
cluster/app/ page fails to render
[ https://issues.apache.org/jira/browse/YARN-8022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16394312#comment-16394312 ]
Tarun Parimi commented on YARN-8022:
------------------------------------
Looks like this NPE occurs due to the revert of HADOOP-14077 . There was a refactoring of AppBlock.java done in that patch. Reverting of that refactored change resulted in following call added
{code:java}
appBaseProt.getApplicationAttempts(request).getApplicationAttemptList();
{code}
appBaseProto is not instantiated anymore since YARN-7163 , thereby resulting in a NullPointerException
> ResourceManager UI cluster/app/<app-id> page fails to render
> ------------------------------------------------------------
>
> Key: YARN-8022
> URL: https://issues.apache.org/jira/browse/YARN-8022
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Tarun Parimi
> Assignee: Tarun Parimi
> Priority: Blocker
>
> The page displays the message "Failed to read the attempts of the application"
>
> The following stack trace is observed in RM log.
> org.apache.hadoop.yarn.server.webapp.AppBlock: Failed to read the attempts of the application application_1520597233415_0002.
> java.lang.NullPointerException
> at org.apache.hadoop.yarn.server.webapp.AppBlock$3.run(AppBlock.java:283)
> at org.apache.hadoop.yarn.server.webapp.AppBlock$3.run(AppBlock.java:280)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1682)
> at org.apache.hadoop.yarn.server.webapp.AppBlock.render(AppBlock.java:279)
> at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMAppBlock.render(RMAppBlock.java:71)
> at org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
> at org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:79)
> at org.apache.hadoop.yarn.webapp.View.render(View.java:235)
> at org.apache.hadoop.yarn.webapp.view.HtmlPage$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.app(RmController.java:54)
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