Tsuyoshi OZAWA created YARN-2025:
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Summary: Possible NPE in schedulers
Key: YARN-2025
URL: https://issues.apache.org/jira/browse/YARN-2025
Project: Hadoop YARN
Issue Type: Bug
Reporter: Tsuyoshi OZAWA
Assignee: Tsuyoshi OZAWA
In FifoScheduler/FairScheduler/CapacityScheduler#addApplicationAttempt(), we
don't check whether {{application}} is null. This can cause NPE in following
sequences: addApplication() -> doneApplication() (e.g. AppKilledTransition) ->
addApplicationAttempt().
{code}
SchedulerApplication application =
applications.get(applicationAttemptId.getApplicationId());
String user = application.getUser();
{code}
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