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https://issues.apache.org/jira/browse/SPARK-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14219908#comment-14219908
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Nishkam Ravi commented on SPARK-4515:
-------------------------------------
I run a slightly modified version of PageRank, but I'm sure that built-in
PageRank would reproduce this problem just fine. Cluster size: 6 nodes (one
35GB executor per node), input dataset size: 32GB.
> OOM/GC errors with sort-based shuffle
> -------------------------------------
>
> Key: SPARK-4515
> URL: https://issues.apache.org/jira/browse/SPARK-4515
> Project: Spark
> Issue Type: Bug
> Components: Shuffle
> Affects Versions: 1.2.0
> Reporter: Nishkam Ravi
> Priority: Blocker
>
> 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:
> {code}
> 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)
> {code}
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