Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/5636#discussion_r36251038
--- Diff:
core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala ---
@@ -473,6 +473,299 @@ class DAGSchedulerSuite
assertDataStructuresEmpty()
}
+ // Helper function to validate state when creating tests for task
failures
+ def checkStageId(stageId: Int, attempt: Int, stageAttempt: TaskSet) {
+ assert(stageAttempt.stageId === stageId)
+ assert(stageAttempt.stageAttemptId == attempt)
+ }
+
+ def makeCompletions(stageAttempt: TaskSet, reduceParts: Int):
Seq[(Success.type, MapStatus)] = {
+ stageAttempt.tasks.zipWithIndex.map { case (task, idx) =>
+ (Success, makeMapStatus("host" + ('A' + idx).toChar, reduceParts))
+ }.toSeq
+ }
+
+ def setupStageAbortTest(sc: SparkContext) {
+ sc.listenerBus.addListener(new EndListener())
+ ended = false
+ jobResult = null
+ }
+
+ // Create a new Listener to confirm that the listenerBus sees the JobEnd
message
+ // when we abort the stage. This message will also be consumed by the
EventLoggingListener
+ // so this will propagate up to the user.
+ var ended = false
+ var jobResult : JobResult = null
+
+ class EndListener extends SparkListener {
+ override def onJobEnd(jobEnd: SparkListenerJobEnd): Unit = {
+ jobResult = jobEnd.jobResult
+ ended = true
+ }
+ }
+
+ // Helper functions to extract commonly used code in Fetch Failure test
cases
+ /**
+ * Common code to get the next stage attempt, confirm it's the one we
expect, and complete it
+ * succesfullly.
+ *
+ * @param stageId - The current stageId
+ * @param attemptIdx - The current attempt count
+ * @param numPartitions - The number of partitions in the next stage
+ */
+ def completeNextShuffleMapSuccesfully(stageId: Int, attemptIdx: Int,
numPartitions: Int): Unit = {
+ val stageAttempt = taskSets.last
+ checkStageId(stageId, attemptIdx, stageAttempt)
+ complete(stageAttempt, makeCompletions(stageAttempt, numPartitions))
+ }
+
+ /**
+ * Common code to get the next stage attempt, confirm it's the one we
expect, and complete it
+ * with an intermediate FetchFailure.
+ *
+ * @param stageId - The current stageId
+ * @param attemptIdx - The current attempt count
+ * @param shuffleId - The shuffleId of the stage with a fetch failure
+ */
+ def completeNextShuffleMapWithFailureAndSuccess(stageId: Int,
--- End diff --
I think we can probably just get rid of the is method and use
`completeNextStageWithFetchFailure` in these cases. its not exactly the same,
but the simpler one is good enough for what we are testing.
(Of course we could have even more tests with all the assorted variants,
but we could spend lifetimes on that ...)
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