Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21356#discussion_r189695936
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/AsyncEventQueue.scala ---
@@ -130,7 +129,11 @@ private class AsyncEventQueue(val name: String, conf:
SparkConf, metrics: LiveLi
eventCount.incrementAndGet()
eventQueue.put(POISON_PILL)
}
- dispatchThread.join()
+ // this thread might be trying to stop itself as part of error
handling -- we can't join
+ // in that case.
+ if (Thread.currentThread() != dispatchThread) {
--- End diff --
it's ok to leave this, but this doesn't happen anymore, right?
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