Critical Description
When enable push-based shuffle, there is a chance that task hang
59 Executor task launch worker for task 424.0 in stage 753.0 (TID 106778) WAITING Lock(java.util.concurrent.ThreadPoolExecutor$Worker@1660371198}) sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2044) java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:753) org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:85) org.apache.spark.util.CompletionIterator.next(CompletionIterator.scala:29) scala.collection.Iterator$$anon$11.nextCur(Iterator.scala:486) scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:492) scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460) org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:31) org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37) scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage6.sort_addToSorter_0$(Unknown Source) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage6.processNext(Unknown Source) org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43) org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$1.hasNext(WholeStageCodegenExec.scala:760) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage7.smj_findNextJoinRows_0$(Unknown Source) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage7.hashAgg_doAggregateWithKeys_1$(Unknown Source) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage7.hashAgg_doAggregateWithKeys_0$(Unknown Source) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage7.hashAgg_doAggregateWithoutKey_0$(Unknown Source) org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage7.processNext(Unknown Source) org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43) org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$2.hasNext(WholeStageCodegenExec.scala:779) scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460) org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:140) org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59) org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99) org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52) org.apache.spark.scheduler.Task.run(Task.scala:136) org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:507) org.apache.spark.executor.Executor$TaskRunner$$Lambda$518/852390142.apply(Unknown Source) org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1470) org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:510) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) java.lang.Thread.run(Thread.java:748)
ShuffleBlockFetcherIterator.scala:753
while (result == null) {
val startFetchWait = System.nanoTime()
753> result = results.take()
val fetchWaitTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startFetchWait)
shuffleMetrics.incFetchWaitTime(fetchWaitTime)
..
}
