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Posted to issues@spark.apache.org by "Ryan Blue (JIRA)" <ji...@apache.org> on 2016/07/05 17:17:10 UTC
[jira] [Commented] (SPARK-16382) YARN - Dynamic allocation with
spark.executor.instances should increase max executors.
[ https://issues.apache.org/jira/browse/SPARK-16382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15362798#comment-15362798 ]
Ryan Blue commented on SPARK-16382:
-----------------------------------
[~tgraves], what do you think the right behavior is here?
> YARN - Dynamic allocation with spark.executor.instances should increase max executors.
> --------------------------------------------------------------------------------------
>
> Key: SPARK-16382
> URL: https://issues.apache.org/jira/browse/SPARK-16382
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Reporter: Ryan Blue
>
> SPARK-13723 changed the behavior of dynamic allocation when {{--num-executors}} ({{spark.executor.instances}}) is set. Rather than turning off dynamic allocation, the value is used as the initial number of executors. This did not change the behavior of {{spark.dynamicAllocation.maxExecutors}}. We've noticed that some users set {{--num-executors}} higher than the max and the expectation is that the max increases.
> I think that either max should be increased, or Spark should fail and complain that the executors requested is higher than the max.
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