Github user drcrallen commented on a diff in the pull request:
https://github.com/apache/spark/pull/10319#discussion_r54676391
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
---
@@ -364,7 +379,29 @@ 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 executors to report done, or else mesosDriver.stop() will
forcefully kill them.
+ // See SPARK-12330
+ val stopwatch = new Stopwatch()
--- End diff --
Sounds good. Sorry, didn't see this note until now, and it looks like this
was already fixed in master.
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