Github user markhamstra commented on a diff in the pull request: https://github.com/apache/spark/pull/126#discussion_r10590604 --- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala --- @@ -123,17 +123,17 @@ class DAGScheduler( private val nextStageId = new AtomicInteger(0) - private[scheduler] val jobIdToStageIds = new TimeStampedHashMap[Int, HashSet[Int]] + private[scheduler] val jobIdToStageIds = new HashMap[Int, HashSet[Int]] - private[scheduler] val stageIdToJobIds = new TimeStampedHashMap[Int, HashSet[Int]] + private[scheduler] val stageIdToJobIds = new HashMap[Int, HashSet[Int]] - private[scheduler] val stageIdToStage = new TimeStampedHashMap[Int, Stage] + private[scheduler] val stageIdToStage = new HashMap[Int, Stage] - private[scheduler] val shuffleToMapStage = new TimeStampedHashMap[Int, Stage] + private[scheduler] val shuffleToMapStage = new HashMap[Int, Stage] - private[spark] val stageToInfos = new TimeStampedHashMap[Stage, StageInfo] + private[spark] val stageToInfos = new HashMap[Stage, StageInfo] --- End diff -- Yes, these being TimeStamped should all have been belt-and-suspenders, since they should all be getting fully cleaned up when jobs end and stages are removed.
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