[jira] [Created] (YARN-6157) Inconsistencies in verifying Max Applications

["Naganarasimha G R (JIRA)" <ji...@apache.org>]

Naganarasimha G R created YARN-6157:
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             Summary: Inconsistencies in verifying Max Applications
                 Key: YARN-6157
                 URL: https://issues.apache.org/jira/browse/YARN-6157
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Naganarasimha G R


Inconsistencies in verifying Max Applications when the max apps is reduced and either HA is done ow work preserving restart is done.

# currently Max applications across cluster should not be done for the recovered apps. Seems like currently we are doing it
#  Max applications for a queue is done @ CapacityScheduler.addApplication which considers sum of Pending and running applications but we add to pending applications in {{CapacityScheduler.addApplicationAttempt -> LeafQueue.addApplicationAttempt}} so between these 2 checks we can activate more apps than what can queue restrict.
# During recovery of a RMApp, if applicationAttempts are not found then we recover it without recovery false @ {{RMAppImpl.RMAppRecoveredTransition}}, this can lead to failure of apps which were accepted earlier but attempt was not yet created and HA happens when MAX app configuration (for cluster/queue) is modified.




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