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[jira] [Created] (FLINK-9848) When Parallelism more than available task slots Flink stays idle


Yazdan Shirvany created FLINK-9848:
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             Summary: When Parallelism more than available task slots Flink stays idle
                 Key: FLINK-9848
                 URL: https://issues.apache.org/jira/browse/FLINK-9848
             Project: Flink
          Issue Type: Bug
          Components: Cluster Management
    Affects Versions: 1.5.1, 1.5.0
            Reporter: Yazdan Shirvany
            Assignee: Yazdan Shirvany
         Attachments: idleJob.jpg

For version 1.4.x when select Parallelism > Available task Slots Flink throw bellow error
NoResourceAvailableException: Not enough free slots available to run the job
 
but for version 1.5.x there are two different behaviors: Sometimes job ran successfully and sometimes it stay in "Running" status for a log time (I waited more than 3 minutes) and never throw error
 
In bellow image Available task slots is 1 and  job has been submitted with Parallelism = 4
Flink Version 1.5.1 !idleJob.jpg!



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