mridulm commented on code in PR #40393:
URL: https://github.com/apache/spark/pull/40393#discussion_r1142362530
##########
core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala:
##########
@@ -4595,6 +4595,184 @@ class DAGSchedulerSuite extends SparkFunSuite with
TempLocalSparkContext with Ti
}
}
+ test("SPARK-40082: recomputation of shuffle map stage with no pending
partitions" +
+ "should not hang") {
+
+ initPushBasedShuffleConfs(conf)
+ conf.set(config.SHUFFLE_MERGER_LOCATIONS_MIN_STATIC_THRESHOLD, 3)
+ DAGSchedulerSuite.clearMergerLocs()
+ DAGSchedulerSuite.addMergerLocs(Seq("host1", "host2", "host3"))
+
+ val rddA = new MyRDD(sc, 2, Nil)
+ val shuffleDepA = new ShuffleDependency(rddA, new HashPartitioner(2))
+ val shuffleIdA = shuffleDepA.shuffleId
+
+ val rddB = new MyRDD(sc, 2, List(shuffleDepA), tracker = mapOutputTracker)
+ val shuffleDepB = new ShuffleDependency(rddB, new HashPartitioner(2))
+
+ val rddC = new MyRDD(sc, 2, List(shuffleDepB), tracker = mapOutputTracker)
+
+ submit(rddC, Array(0, 1))
+
+ completeShuffleMapStageSuccessfully(0, 0, 2, Seq("hostA", "hostA"))
Review Comment:
nit: For consistency, let us make it `hostA` and `hostB` ... and have
`hostA` (say) fail.
##########
core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala:
##########
@@ -4595,6 +4595,184 @@ class DAGSchedulerSuite extends SparkFunSuite with
TempLocalSparkContext with Ti
}
}
+ test("SPARK-40082: recomputation of shuffle map stage with no pending
partitions" +
+ "should not hang") {
+
+ initPushBasedShuffleConfs(conf)
+ conf.set(config.SHUFFLE_MERGER_LOCATIONS_MIN_STATIC_THRESHOLD, 3)
+ DAGSchedulerSuite.clearMergerLocs()
+ DAGSchedulerSuite.addMergerLocs(Seq("host1", "host2", "host3"))
+
+ val rddA = new MyRDD(sc, 2, Nil)
+ val shuffleDepA = new ShuffleDependency(rddA, new HashPartitioner(2))
+ val shuffleIdA = shuffleDepA.shuffleId
+
+ val rddB = new MyRDD(sc, 2, List(shuffleDepA), tracker = mapOutputTracker)
+ val shuffleDepB = new ShuffleDependency(rddB, new HashPartitioner(2))
+
+ val rddC = new MyRDD(sc, 2, List(shuffleDepB), tracker = mapOutputTracker)
+
+ submit(rddC, Array(0, 1))
+
+ completeShuffleMapStageSuccessfully(0, 0, 2, Seq("hostA", "hostA"))
+
+ // Fetch failed
+ runEvent(makeCompletionEvent(
+ taskSets(1).tasks(0),
+ FetchFailed(makeBlockManagerId("hostC"), shuffleIdA, 0L, 0, 0,
Review Comment:
nit: Since map tasks did not run on `hostC`, let us change it to `hostA` as
per comment above.
##########
pom.xml:
##########
@@ -114,7 +114,7 @@
<java.version>1.8</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
- <maven.version>3.8.7</maven.version>
+ <maven.version>3.6.3</maven.version>
Review Comment:
Revert this ?
##########
core/src/test/scala/org/apache/spark/scheduler/DAGSchedulerSuite.scala:
##########
@@ -4595,6 +4595,184 @@ class DAGSchedulerSuite extends SparkFunSuite with
TempLocalSparkContext with Ti
}
}
+ test("SPARK-40082: recomputation of shuffle map stage with no pending
partitions" +
+ "should not hang") {
+
+ initPushBasedShuffleConfs(conf)
+ conf.set(config.SHUFFLE_MERGER_LOCATIONS_MIN_STATIC_THRESHOLD, 3)
+ DAGSchedulerSuite.clearMergerLocs()
+ DAGSchedulerSuite.addMergerLocs(Seq("host1", "host2", "host3"))
+
+ val rddA = new MyRDD(sc, 2, Nil)
+ val shuffleDepA = new ShuffleDependency(rddA, new HashPartitioner(2))
+ val shuffleIdA = shuffleDepA.shuffleId
+
+ val rddB = new MyRDD(sc, 2, List(shuffleDepA), tracker = mapOutputTracker)
+ val shuffleDepB = new ShuffleDependency(rddB, new HashPartitioner(2))
+
+ val rddC = new MyRDD(sc, 2, List(shuffleDepB), tracker = mapOutputTracker)
+
+ submit(rddC, Array(0, 1))
+
+ completeShuffleMapStageSuccessfully(0, 0, 2, Seq("hostA", "hostA"))
+
+ // Fetch failed
+ runEvent(makeCompletionEvent(
+ taskSets(1).tasks(0),
+ FetchFailed(makeBlockManagerId("hostC"), shuffleIdA, 0L, 0, 0,
+ "Fetch failure of task: stageId=1, stageAttempt=0, partitionId=0"),
+ result = null))
+
+ // long running task complete
+ completeShuffleMapStageSuccessfully(1, 0, 2, Seq("hostA", "hostA"))
Review Comment:
nit: let us change the host to `hostB` for successes
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