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https://issues.apache.org/jira/browse/SPARK-7699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14558748#comment-14558748
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Sandy Ryza commented on SPARK-7699:
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We can't wait only on the initial allocation being made because YARN might not
be able to fully satisfy it in any finite amount of time.
> Number of executors can be reduced from initial before work is scheduled
> ------------------------------------------------------------------------
>
> Key: SPARK-7699
> URL: https://issues.apache.org/jira/browse/SPARK-7699
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: meiyoula
> Priority: Minor
>
> 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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