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https://issues.apache.org/jira/browse/SPARK-5336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Graves resolved SPARK-5336.
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       Resolution: Fixed
    Fix Version/s: 1.3.0
         Assignee: WangTaoTheTonic

> spark.executor.cores must not be less than spark.task.cpus
> ----------------------------------------------------------
>
>                 Key: SPARK-5336
>                 URL: https://issues.apache.org/jira/browse/SPARK-5336
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>            Reporter: WangTaoTheTonic
>            Assignee: WangTaoTheTonic
>             Fix For: 1.3.0
>
>
> If user set spark.executor.cores to be less than spark.task.cpus, task 
> scheduler will fall in infinite loop, we should throw an exception.in that 
> case.
> In standalone and mesos mode, we should respect spark.task.cpus too, and I 
> will file another JIRA to solve that.



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