dongjoon-hyun commented on code in PR #44882:
URL: https://github.com/apache/spark/pull/44882#discussion_r1466638029
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core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala:
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@@ -612,6 +612,42 @@ class DAGSchedulerSuite extends SparkFunSuite with
TempLocalSparkContext with Ti
assertDataStructuresEmpty()
}
+ // Note that this test is NOT perfectly reproducible when there is a
deadlock as it uses
+ // Thread.sleep, but it should never fail / flake when there is no deadlock.
+ // If this test starts to flake, this shows that there is a deadlock!
Review Comment:
Got it. Thank you for warning.
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