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https://issues.apache.org/jira/browse/YARN-5562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15436682#comment-15436682
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Rohith Sharma K S commented on YARN-5562:
-----------------------------------------
Exception trace is as follows
{noformat}
Caused by: java.lang.NullPointerException: userId shouldn't be null
at
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at
org.apache.hadoop.yarn.server.timelineservice.storage.reader.ApplicationEntityReader.validateParams(ApplicationEntityReader.java:336)
at
org.apache.hadoop.yarn.server.timelineservice.storage.reader.TimelineEntityReader.readEntities(TimelineEntityReader.java:249)
at
org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineReaderImpl.getEntities(HBaseTimelineReaderImpl.java:86)
at
org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderManager.getEntities(TimelineReaderManager.java:141)
at
org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderWebServices.getEntities(TimelineReaderWebServices.java:562
{noformat}
and
{noformat}
Caused by: java.lang.NullPointerException: userId shouldn't be null
at
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at
org.apache.hadoop.yarn.server.timelineservice.storage.reader.FlowRunEntityReader.validateParams(FlowRunEntityReader.java:89)
at
org.apache.hadoop.yarn.server.timelineservice.storage.reader.TimelineEntityReader.readEntities(TimelineEntityReader.java:249)
at
org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineReaderImpl.getEntities(HBaseTimelineReaderImpl.java:86)
at
org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderManager.getEntities(TimelineReaderManager.java:141)
at
org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderWebServices.getEntities(TimelineReaderWebServices.java:562)
{noformat}
> [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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