Github user kayousterhout commented on a diff in the pull request:
https://github.com/apache/spark/pull/14079#discussion_r92081435
--- Diff:
core/src/test/scala/org/apache/spark/scheduler/SchedulerIntegrationSuite.scala
---
@@ -157,8 +160,16 @@ abstract class SchedulerIntegrationSuite[T <:
MockBackend: ClassTag] extends Spa
}
// When a job fails, we terminate before waiting for all the task
end events to come in,
// so there might still be a running task set. So we only check
these conditions
- // when the job succeeds
- assert(taskScheduler.runningTaskSets.isEmpty)
+ // when the job succeeds.
+ // When the final task of a taskset completes, we post
+ // the event to the DAGScheduler event loop before we finish
processing in the taskscheduler
+ // thread. Its possible the DAGScheduler thread processes the
event, finishes the job,
+ // and notifies the job waiter before our original thread in the
task scheduler finishes
+ // handling the event and marks the taskset as complete. So its ok
if we need to wait a
+ // *little* bit longer for the original taskscheduler thread to
finish up to deal w/ the race.
+ eventually(timeout(1 second), interval(100 millis)) {
+ assert(taskScheduler.runningTaskSets.isEmpty)
--- End diff --
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