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https://issues.apache.org/jira/browse/SPARK-7699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14550185#comment-14550185
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Sean Owen commented on SPARK-7699:
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The parameter has meaning if the system isn't idle, right? I understood this as
the whole point of the initial executors setting -- to hint how much load would
be applied immediately, rather than wait for it to ramp up. If the system is
actually idle, isn't the right action to switch to minimum as soon as possible?
> Config "spark.dynamicAllocation.initialExecutors" has no effect
> ----------------------------------------------------------------
>
> Key: SPARK-7699
> URL: https://issues.apache.org/jira/browse/SPARK-7699
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: meiyoula
>
> spark.dynamicAllocation.minExecutors 2
> spark.dynamicAllocation.initialExecutors 3
> spark.dynamicAllocation.maxExecutors 4
> Just run the spark-shell with above configurations, the initial executor
> number is 2.
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