edwinalu commented on a change in pull request #23767: [SPARK-26329][CORE][WIP]
Faster polling of executor memory metrics.
URL: https://github.com/apache/spark/pull/23767#discussion_r257384077
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File path: core/src/main/scala/org/apache/spark/executor/Executor.scala
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@@ -412,6 +478,21 @@ private[spark] class Executor(
env.mapOutputTracker.asInstanceOf[MapOutputTrackerWorker].updateEpoch(task.epoch)
}
+ val stageId = task.stageId
+ val stageAttemptId = task.stageAttemptId
+ val count = new AtomicLong(0)
+ val old = activeStages.putIfAbsent((stageId, stageAttemptId), count)
+ val stageCount =
+ if (old != null) {
+ old.incrementAndGet()
+ } else {
+ logDebug(s"added ($stageId, $stageAttemptId) to activeStages")
+ count.incrementAndGet()
+ }
+ logDebug(s"activeStages: ($stageId, $stageAttemptId) -> $stageCount")
+ stageMetricPeaks.putIfAbsent((stageId, stageAttemptId),
Review comment:
computeIfAbsent?
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