Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/4168#discussion_r24308449
--- Diff:
core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala ---
@@ -226,50 +249,32 @@ private[spark] class ExecutorAllocationManager(
* If the cap on the number of executors is reached, give up and reset
the
* number of executors to add next round instead of continuing to double
it.
* Return the number actually requested.
+ *
+ * @param maxNumNeededExecutors the maximum number of executors all
currently running or pending
+ * tasks could fill
*/
- private def addExecutors(): Int = synchronized {
+ private def addExecutors(maxNumNeededExecutors: Int): Int = synchronized
{
// Do not request more executors if we have already reached the upper
bound
- val numExistingExecutors = executorIds.size + numExecutorsPending
- if (numExistingExecutors >= maxNumExecutors) {
+ val currentTarget = currentTargetNumExecutors
+ if (currentTarget >= maxNumExecutors) {
logDebug(s"Not adding executors because there are already
${executorIds.size} " +
s"registered and $numExecutorsPending pending executor(s) (limit
$maxNumExecutors)")
--- End diff --
you may have to update this comment because it doesn't take into account
executors pending to be removed, so the math doesn't quite add up right
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