GitHub user jerryshao opened a pull request:
https://github.com/apache/spark/pull/14149
[SPARK-16435][YARN][MINOR] Add warning log if initialExecutors is less than
minExecutors
## What changes were proposed in this pull request?
Currently if `spark.dynamicAllocation.initialExecutors` is less than
`spark.dynamicAllocation.minExecutors`, Spark will automatically pick the
minExecutors without any warning. While in 1.6 Spark will throw exception if
configured like this. So here propose to add warning log if these parameters
are configured invalidly.
## How was this patch tested?
Unit test added to verify the scenario.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jerryshao/apache-spark SPARK-16435
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14149.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #14149
----
commit f08eabdc9c20f29dd3a007784a4b893172bdc2db
Author: jerryshao <ss...@hortonworks.com>
Date: 2016-07-12T08:20:04Z
Add warning log if initialExecutors is less than minExecutors
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