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Posted to yarn-dev@hadoop.apache.org by "Prabhu Joseph (JIRA)" <ji...@apache.org> on 2015/10/12 18:07:05 UTC

[jira] [Created] (YARN-4256) YARN fair scheduler vcores with decimal values

Prabhu Joseph created YARN-4256:
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             Summary: YARN fair scheduler vcores with decimal values
                 Key: YARN-4256
                 URL: https://issues.apache.org/jira/browse/YARN-4256
             Project: Hadoop YARN
          Issue Type: Bug
          Components: fairscheduler
    Affects Versions: 2.7.1
            Reporter: Prabhu Joseph
            Priority: Critical
             Fix For: 2.7.2


When the queue with vcores is in decimal value, the value after the decimal point is taken as vcores by FairScheduler.

For the below queue,

        <minResources>20000 mb,20 vcores,20.25 disks</minResources>
        <maxResources>30000 mb,40.2 vcores,30.25 disks</maxResources>

When many applications submitted  parallely into queue, all were in PENDING state as the vcores is taken as 2 skipping the value 40.

The code FairSchedulerConfiguration.java to Pattern match the vcores has to be improved in such a way either throw AllocationConfigurationException("Missing resource") or consider the value before decimal.



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