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https://issues.apache.org/jira/browse/YARN-5562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15436806#comment-15436806
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Varun Saxena commented on YARN-5562:
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This is similar to YARN-4220.
I think we can close either one of the JIRA. As Li is on leave, maybe you can
assign that JIRA to yourself or close that one.
> [Atsv2] system entities retrieval in REST throws NPE
> ----------------------------------------------------
>
> Key: YARN-5562
> URL: https://issues.apache.org/jira/browse/YARN-5562
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
>
> It is seen that when evene try to retrieval system entities throw NPE. URL
> /ws/v2/timeline/apps/{app-id}/entities
> # for YARN_APPLICATION and YARN_FLOW_RUN
> {noformat}
> {
> "exception": "WebApplicationException",
> "message": "java.lang.NullPointerException: userId shouldn't be null",
> "javaClassName": "javax.ws.rs.WebApplicationException"
> }
> {noformat}
> May be these entities can be skipped if not intended to use via REST apis.
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