Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/14149#discussion_r70469463
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -2342,6 +2342,12 @@ private[spark] object Utils extends Logging {
* Return the initial number of executors for dynamic allocation.
*/
def getDynamicAllocationInitialExecutors(conf: SparkConf): Int = {
+ if (conf.get(DYN_ALLOCATION_INITIAL_EXECUTORS) <
conf.get(DYN_ALLOCATION_MIN_EXECUTORS)) {
+ logWarning(s"${DYN_ALLOCATION_INITIAL_EXECUTORS.key} less than " +
+ s"${DYN_ALLOCATION_MIN_EXECUTORS.key} is invalid, will use " +
+ s"${DYN_ALLOCATION_MIN_EXECUTORS} instead.")
--- End diff --
I agree that either spark.executor.instances or initialExecutors less than
minimum should produce a warning.
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