Github user suyanNone commented on a diff in the pull request:
https://github.com/apache/spark/pull/4055#discussion_r33861293
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -1193,8 +1193,10 @@ class DAGScheduler(
// TODO: This will be really slow if we keep accumulating shuffle
map stages
for ((shuffleId, stage) <- shuffleToMapStage) {
stage.removeOutputsOnExecutor(execId)
- val locs = stage.outputLocs.map(list => if (list.isEmpty) null
else list.head).toArray
- mapOutputTracker.registerMapOutputs(shuffleId, locs, changeEpoch
= true)
+ if (!runningStages.contains(stage)) {
--- End diff --
Another things to claim, if we fix the problem described in that issues, we
may never meet some problem resulted by that 2 part code. it may not help for
that issue, do I need to create other issue for that 2.
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