Github user squito commented on a diff in the pull request: https://github.com/apache/spark/pull/4055#discussion_r32778983 --- Diff: core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala --- @@ -598,6 +598,49 @@ class DAGSchedulerSuite assertDataStructuresEmpty() } + test("run with ShuffleMapStage retry") { + val firstRDD = new MyRDD(sc, 3, Nil) + val firstShuffleDep = new ShuffleDependency(firstRDD, null) + val firstShuffleId = firstShuffleDep.shuffleId + val shuffleMapRdd = new MyRDD(sc, 3, List(firstShuffleDep)) + val shuffleDep = new ShuffleDependency(shuffleMapRdd, null) + val reduceRdd = new MyRDD(sc, 1, List(shuffleDep)) + submit(reduceRdd, Array(0)) + + complete(taskSets(0), Seq( + (Success, makeMapStatus("hostB", shuffleMapRdd.partitions.size)), + (Success, makeMapStatus("hostB", shuffleMapRdd.partitions.size)), + (Success, makeMapStatus("hostC", shuffleMapRdd.partitions.size)) + )) + + complete(taskSets(1), Seq( + (Success, makeMapStatus("hostA", reduceRdd.partitions.size)), + (Success, makeMapStatus("hostB", reduceRdd.partitions.size)) + )) + runEvent(ExecutorLost("exec-hostA")) + // Resubmit already succcessd in hostA task + runEvent(CompletionEvent(taskSets(1).tasks(0), Resubmitted, + null, null, createFakeTaskInfo(), null)) + + // Cause mapOutTracker remove hostA outputs for taskset(0). + // Task that resubmitted will fetch matadata failed. + runEvent(CompletionEvent(taskSets(1).tasks(0), + FetchFailed(null, firstShuffleId, -1, 0, "Fetch matadata failed"), + null, null, createFakeTaskInfo(), null)) --- End diff -- if `taskSet(0)(0)` is really on "hostB", then it doesn't seem like you'd have a fetch failed here.
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