Github user drcrallen commented on a diff in the pull request: https://github.com/apache/spark/pull/10319#discussion_r51287135 --- 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 -- sure, will make sure that's in
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