[jira] [Created] (YARN-9413) Queue resource leak after app fail for CapacityScheduler

["Tao Yang (JIRA)" <ji...@apache.org>]

Tao Yang created YARN-9413:
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             Summary: Queue resource leak after app fail for CapacityScheduler
                 Key: YARN-9413
                 URL: https://issues.apache.org/jira/browse/YARN-9413
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler
    Affects Versions: 3.1.2
            Reporter: Tao Yang
            Assignee: Tao Yang


To reproduce this problem:
 # Submit an app which is configured to keep containers across app attempts and should fail after AM finished at first time (am-max-attempts=1).
 # App is started with 2 containers running on NM1 node.
 # Fail the AM of the application with PREEMPTED exit status which should not count towards max attempt retry but app will fail immediately.
 # Used resource of this queue leaks after app fail.

The root cause is the inconsistency of handling app attempt failure between RMAppAttemptImpl$BaseFinalTransition#transition and RMAppImpl$AttemptFailedTransition#transition:
 # After app fail, RMAppFailedAttemptEvent will be sent in RMAppAttemptImpl$BaseFinalTransition#transition, if exit status of AM container is PREEMPTED/ABORTED/DISKS_FAILED/KILLED_BY_RESOURCEMANAGER, it will not count towards max attempt retry, so that it will send AppAttemptRemovedSchedulerEvent with keepContainersAcrossAppAttempts=true and RMAppFailedAttemptEvent with transferStateFromPreviousAttempt=true.
 # RMAppImpl$AttemptFailedTransition#transition handle RMAppFailedAttemptEvent and will fail the app if its max app attempts is 1.
 # CapacityScheduler handles AppAttemptRemovedSchedulerEvent in CapcityScheduler#doneApplicationAttempt, it will skip killing and calling completion process for containers belong to this app, so that queue resource leak happens.



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