beliefer commented on code in PR #50020:
URL: https://github.com/apache/spark/pull/50020#discussion_r1982637434
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core/src/main/scala/org/apache/spark/BarrierCoordinator.scala:
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@@ -53,8 +54,9 @@ private[spark] class BarrierCoordinator(
// TODO SPARK-25030 Create a Timer() in the mainClass submitted to
SparkSubmit makes it unable to
// fetch result, we shall fix the issue.
- private lazy val timer = ThreadUtils.newSingleThreadScheduledExecutor(
+ private lazy val timer = ThreadUtils.newDaemonSingleThreadScheduledExecutor(
"BarrierCoordinator barrier epoch increment timer")
+ private val timerFutures = Collections.synchronizedList(new
ArrayList[ScheduledFuture[_]])
Review Comment:
I'm a bit concern for the potential memory leak as @srowen said at
https://github.com/apache/spark/pull/50107#discussion_r1979417965
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