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https://issues.apache.org/jira/browse/SPARK-10644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907100#comment-14907100
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Balagopal Nair commented on SPARK-10644:
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4 core machine, 3 Workers with 3 executors each and there is enough memory.
As I said before, I did switch to using one worker processor with 9 executors
and the issue is not there anymore. So this is a minor bug.
> 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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