Github user mgummelt commented on a diff in the pull request:
https://github.com/apache/spark/pull/18098#discussion_r118558695
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
---
@@ -393,7 +410,30 @@ private[spark] class
MesosCoarseGrainedSchedulerBackend(
val offerId = offer.getId.getValue
val resources = remainingResources(offerId)
- if (canLaunchTask(slaveId, resources)) {
+ var createTask = canLaunchTask(slaveId, resources)
+ if (hostToLocalTaskCount.nonEmpty) {
+ // Locality information is available
+ if (numExecutors() < executorLimit) {
--- End diff --
s/numExecutors()/numExecutors
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