[jira] [Resolved] (SPARK-10644) Applications wait even if free executors are available

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-10644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-10644.
-------------------------------
    Resolution: Not A Problem

[~nbalagopal] I'm not sure why you keep ignoring the memory issue, as it seems to explain your problem. Scheduling is *not* a function of cores only.

> Applications wait even if free executors are available
> ------------------------------------------------------
>
>                 Key: SPARK-10644
>                 URL: https://issues.apache.org/jira/browse/SPARK-10644
>             Project: Spark
>          Issue Type: Bug
>          Components: Scheduler
>    Affects Versions: 1.5.0
>         Environment: RHEL 6.5 64 bit
>            Reporter: Balagopal Nair
>            Priority: Minor
>
> Number of workers: 21
> Number of executors: 63
> Steps to reproduce:
> 1. Run 4 jobs each with max cores set to 10
> 2. The first 3 jobs run with 10 each. (30 executors consumed so far)
> 3. The 4 th job waits even though there are 33 idle executors.
> The reason is that a job will not get executors unless 
> the total number of EXECUTORS in use < the number of WORKERS
> If there are executors available, resources should be allocated to the pending job.



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