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Posted to issues@spark.apache.org by "Bogdan (Jira)" <ji...@apache.org> on 2019/10/21 09:08:00 UTC
[jira] [Created] (SPARK-29534) Hanging tasks in
DiskBlockObjectWriter.commitAndGet while calling native
FileDispatcherImpl.size0
Bogdan created SPARK-29534:
------------------------------
Summary: Hanging tasks in DiskBlockObjectWriter.commitAndGet while calling native FileDispatcherImpl.size0
Key: SPARK-29534
URL: https://issues.apache.org/jira/browse/SPARK-29534
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.4.2
Reporter: Bogdan
Tasks are hanging in native _FileDispatcherImpl.size0_ with calling site from _DiskBlockObjectWriter.commitAndGet_. Maybe enhance _DiskBlockObjectWriter_ to handle this type of behaviour?
The behaviour is consistent and happens on a daily basis. It has been temporarily addressed by using speculative execution. However, for longer tasks (1h+) the impact in runtime is significant.
|sun.nio.ch.FileDispatcherImpl.size0(Native Method)
sun.nio.ch.FileDispatcherImpl.size(FileDispatcherImpl.java:88)
sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:264) => holding Monitor(java.lang.Object@853892634})
org.apache.spark.storage.DiskBlockObjectWriter.commitAndGet(DiskBlockObjectWriter.scala:183)
org.apache.spark.shuffle.sort.ShuffleExternalSorter.writeSortedFile(ShuffleExternalSorter.java:204)
org.apache.spark.shuffle.sort.ShuffleExternalSorter.spill(ShuffleExternalSorter.java:272)
org.apache.spark.memory.MemoryConsumer.spill(MemoryConsumer.java:65)
org.apache.spark.shuffle.sort.ShuffleExternalSorter.insertRecord(ShuffleExternalSorter.java:403)
org.apache.spark.shuffle.sort.UnsafeShuffleWriter.insertRecordIntoSorter(UnsafeShuffleWriter.java:267)
org.apache.spark.shuffle.sort.UnsafeShuffleWriter.write(UnsafeShuffleWriter.java:188)
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:55)
org.apache.spark.scheduler.Task.run(Task.scala:121)
org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:408)
org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360)
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:414)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)|
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