[SPARK-4515] OOM/GC errors with sort-based shuffle

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Duplicate
• Affects Version/s: 1.2.0
• Component/s: Shuffle, Spark Core
• Target Version/s: 1.2.0
• Assignee: Unassigned
• Reporter: Nishkam Ravi
• Created: 20/Nov/14 19:34
• Updated: 17/May/20 18:31
• Resolved: 24/Nov/14 20:50

Description

OOM/GC errors with sort-based shuffle that go away when shuffle.manager is set to hash. Also observing memory leak issues. Can be reproduced with PageRank with a large enough input dataset. Sample stack trace:

19:22:14 WARN TaskSetManager: Lost task 56.0 in stage 1.0 (TID 298, c1706.halxg.cloudera.com): java.lang.OutOfMemoryError: Java heap space
        com.ning.compress.BufferRecycler.allocDecodeBuffer(BufferRecycler.java:137)
        com.ning.compress.lzf.LZFInputStream.<init>(LZFInputStream.java:111)
        com.ning.compress.lzf.LZFInputStream.<init>(LZFInputStream.java:97)
        com.ning.compress.lzf.LZFInputStream.<init>(LZFInputStream.java:80)
        org.apache.spark.io.LZFCompressionCodec.compressedInputStream(CompressionCodec.scala:107)
        org.apache.spark.storage.BlockManager.wrapForCompression(BlockManager.scala:1155)
        org.apache.spark.util.collection.ExternalSorter$SpillReader.nextBatchStream(ExternalSorter.scala:559)
        org.apache.spark.util.collection.ExternalSorter$SpillReader.<init>(ExternalSorter.scala:531)
        org.apache.spark.util.collection.ExternalSorter$$anonfun$6.apply(ExternalSorter.scala:379)
        org.apache.spark.util.collection.ExternalSorter$$anonfun$6.apply(ExternalSorter.scala:379)
        scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
        scala.collection.AbstractTraversable.map(Traversable.scala:105)
        org.apache.spark.util.collection.ExternalSorter.merge(ExternalSorter.scala:379)
        org.apache.spark.util.collection.ExternalSorter.partitionedIterator(ExternalSorter.scala:686)
        org.apache.spark.util.collection.ExternalSorter.writePartitionedFile(ExternalSorter.scala:739)
        org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:70)
        org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
        org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
        org.apache.spark.scheduler.Task.run(Task.scala:56)
        org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:195)
        java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        java.lang.Thread.run(Thread.java:745)

Issue Links

• duplicates: SPARK-4467 Number of elements read is never reset in ExternalSorter