Github user gpang commented on a diff in the pull request:
https://github.com/apache/spark/pull/18098#discussion_r118529407
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
---
@@ -393,7 +409,30 @@ 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) {
--- End diff --
Yes, that is the semantics I was going for.
For the scenario you are mentioning, I'm not sure how that would happen. If
there are no executors required, then offers will be declined and this logic
will not be exercised. When would an executor be launched on any host?
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