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Posted to issues@spark.apache.org by "Alessandro Bellina (JIRA)" <ji...@apache.org> on 2019/04/24 15:42:00 UTC
[jira] [Created] (SPARK-27558) NPE in TaskCompletionListener due to
Spark OOM in UnsafeExternalSorter causing tasks to hang
Alessandro Bellina created SPARK-27558:
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Summary: NPE in TaskCompletionListener due to Spark OOM in UnsafeExternalSorter causing tasks to hang
Key: SPARK-27558
URL: https://issues.apache.org/jira/browse/SPARK-27558
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.4.2, 2.3.3
Reporter: Alessandro Bellina
We see an NPE in the UnsafeInMemorySorter.getMemoryUsage function (due to the array we are accessing there being null). This looks to be caused by a Spark OOM when UnsafeInMemorySorter is trying to spill.
This is likely a symptom of https://issues.apache.org/jira/browse/SPARK-21492. The real question for this ticket is, could we handle things more gracefully, rather than NPE. For example:
allocate the new array into a temporary here:
https://github.com/apache/spark/blob/master/core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeInMemorySorter.java#L182
so when this fails:
https://github.com/apache/spark/blob/master/core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeInMemorySorter.java#L186
we don't end up with a null "array". This state is causing one of our jobs to hang infinitely (we think) due to the original allocation error.
Stack trace for reference
{noformat}
2019-04-23 08:57:14,989 [Executor task launch worker for task 46729] ERROR org.apache.spark.TaskContextImpl - Error in TaskCompletionListener
java.lang.NullPointerException
at org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter.getMemoryUsage(UnsafeInMemorySorter.java:208)
at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.getMemoryUsage(UnsafeExternalSorter.java:249)
at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.updatePeakMemoryUsed(UnsafeExternalSorter.java:253)
at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.freeMemory(UnsafeExternalSorter.java:296)
at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.cleanupResources(UnsafeExternalSorter.java:328)
at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.lambda$new$0(UnsafeExternalSorter.java:178)
at org.apache.spark.TaskContextImpl$$anonfun$markTaskCompleted$1.apply(TaskContextImpl.scala:118)
at org.apache.spark.TaskContextImpl$$anonfun$markTaskCompleted$1.apply(TaskContextImpl.scala:118)
at org.apache.spark.TaskContextImpl$$anonfun$invokeListeners$1.apply(TaskContextImpl.scala:131)
at org.apache.spark.TaskContextImpl$$anonfun$invokeListeners$1.apply(TaskContextImpl.scala:129)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at org.apache.spark.TaskContextImpl.invokeListeners(TaskContextImpl.scala:129)
at org.apache.spark.TaskContextImpl.markTaskCompleted(TaskContextImpl.scala:117)
at org.apache.spark.scheduler.Task.run(Task.scala:119)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2019-04-23 08:57:15,069 [Executor task launch worker for task 46729] ERROR org.apache.spark.executor.Executor - Exception in task 102.0 in stage 28.0 (TID 46729)
org.apache.spark.util.TaskCompletionListenerException: null
Previous exception in task: Unable to acquire 65536 bytes of memory, got 0
org.apache.spark.memory.MemoryConsumer.throwOom(MemoryConsumer.java:157)
org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:98)
org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter.reset(UnsafeInMemorySorter.java:186)
org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.spill(UnsafeExternalSorter.java:229)
org.apache.spark.memory.TaskMemoryManager.acquireExecutionMemory(TaskMemoryManager.java:204)
org.apache.spark.memory.TaskMemoryManager.allocatePage(TaskMemoryManager.java:283)
org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:96)
org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.growPointerArrayIfNecessary(UnsafeExternalSorter.java:348)
org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.insertRecord(UnsafeExternalSorter.java:403)
org.apache.spark.sql.execution.UnsafeExternalRowSorter.insertRow(UnsafeExternalRowSorter.java:135)
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage23.sort_addToSorter_0$(Unknown Source)
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage23.processNext(Unknown Source)
org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$10$$anon$1.hasNext(WholeStageCodegenExec.scala:614)
org.apache.spark.sql.execution.window.WindowExec$$anonfun$11$$anon$1.fetchNextRow(WindowExec.scala:314)
org.apache.spark.sql.execution.window.WindowExec$$anonfun$11$$anon$1.<init>(WindowExec.scala:323)
org.apache.spark.sql.execution.window.WindowExec$$anonfun$11.apply(WindowExec.scala:303)
org.apache.spark.sql.execution.window.WindowExec$$anonfun$11.apply(WindowExec.scala:302)
org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$23.apply(RDD.scala:801)
org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$23.apply(RDD.scala:801)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:49)
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:96)
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:53)
org.apache.spark.scheduler.Task.run(Task.scala:109)
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)
at org.apache.spark.TaskContextImpl.invokeListeners(TaskContextImpl.scala:139)
at org.apache.spark.TaskContextImpl.markTaskCompleted(TaskContextImpl.scala:117)
at org.apache.spark.scheduler.Task.run(Task.scala:119)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
{noformat}
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