Github user tnachen commented on a diff in the pull request:
https://github.com/apache/spark/pull/10319#discussion_r51281443
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
---
@@ -364,7 +379,23 @@ private[spark] class CoarseMesosSchedulerBackend(
}
override def stop() {
- super.stop()
+ // Make sure we're not launching tasks during shutdown
+ stateLock.synchronized {
+ if (stopCalled) {
+ logWarning("Stop called multiple times, ignoring")
+ return
+ }
+ stopCalled = true
+ super.stop()
+ }
+ // Wait for finish
+ val stopwatch = new Stopwatch()
+ stopwatch.start()
+ // slaveIdsWithExecutors has no memory barrier, so this is eventually
consistent
+ while (slaveIdsWithExecutors.nonEmpty &&
+ stopwatch.elapsed(TimeUnit.MILLISECONDS) < shutdownTimeoutMS) {
+ Thread.sleep(100)
+ }
--- End diff --
I thought you used to have a check in the end, that if
slaveIdsWithExecutors is non empty we print a warning right? I think that's
still valuable to print it.
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