Kendall Thrapp created YARN-3143:
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Summary: RM Apps REST API can return NPE or entries missing id and
other fields
Key: YARN-3143
URL: https://issues.apache.org/jira/browse/YARN-3143
Project: Hadoop YARN
Issue Type: Bug
Components: webapp
Affects Versions: 2.5.2
Reporter: Kendall Thrapp
I'm seeing intermittent null pointer exceptions being returned by
the YARN Apps REST API.
For example:
http://{cluster}:{port}/ws/v1/cluster/apps?finalStatus=UNDEFINED
JSON Response was:
{"RemoteException":{"exception":"NullPointerException","javaClassName":"java.lang.NullPointerException"}}
At a glance appears to be only when we query for unfinished apps (i.e.
finalStatus=UNDEFINED).
Possibly related, when I do get back a list of apps, sometimes one or more of
the apps will be missing most of the fields, like id, name, user, etc., and the
fields that are present all have zero for the value.
For example:
{"progress":0.0,"clusterId":0,"applicationTags":"","startedTime":0,"finishedTime":0,"elapsedTime":0,"allocatedMB":0,"allocatedVCores":0,"runningContainers":0,"preemptedResourceMB":0,"preemptedResourceVCores":0,"numNonAMContainerPreempted":0,"numAMContainerPreempted":0}
Let me know if there's any other information I can provide to help debug.
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