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Gabor Feher commented on SPARK-3630: ------------------------------------ Hi, I've run into this problem as well. {code} com.esotericsoftware.kryo.KryoException: java.io.IOException: failed to uncompress the chunk: PARSING_ERROR(2) at com.esotericsoftware.kryo.io.Input.fill(Input.java:142) at com.esotericsoftware.kryo.io.Input.require(Input.java:155) at com.esotericsoftware.kryo.io.Input.readInt(Input.java:337) at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:109) at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:610) at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:721) at org.apache.spark.serializer.KryoDeserializationStream.readObject(KryoSerializer.scala:228) at org.apache.spark.serializer.DeserializationStream.readKey(Serializer.scala:169) at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:201) at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:198) at org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:73) at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:32) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39) at org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:197) at org.apache.spark.shuffle.BlockStoreShuffleReader.read(BlockStoreShuffleReader.scala:103) at org.apache.spark.rdd.ShuffledRDD.compute(ShuffledRDD.scala:98) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) ... Caused by: java.io.IOException: failed to uncompress the chunk: PARSING_ERROR(2) at org.xerial.snappy.SnappyInputStream.hasNextChunk(SnappyInputStream.java:361) at org.xerial.snappy.SnappyInputStream.rawRead(SnappyInputStream.java:158) at org.xerial.snappy.SnappyInputStream.read(SnappyInputStream.java:142) at com.esotericsoftware.kryo.io.Input.fill(Input.java:140) ... 45 more {code} Spark version was 1.6.0, official "hadoop free" download, running with yarn client mode on Amazon EMR. I used these instructions to link in hadoop: https://spark.apache.org/docs/1.6.0/hadoop-provided.html Hadoop version was 2.6.0 As far as I could see, the problem has shown up only after a few hours of running, "in the middle" of a job. > Identify cause of Kryo+Snappy PARSING_ERROR > ------------------------------------------- > > Key: SPARK-3630 > URL: https://issues.apache.org/jira/browse/SPARK-3630 > Project: Spark > Issue Type: Task > Components: Spark Core > Affects Versions: 1.1.0, 1.2.0 > Reporter: Andrew Ash > Assignee: Josh Rosen > > A recent GraphX commit caused non-deterministic exceptions in unit tests so > it was reverted (see SPARK-3400). > Separately, [~aash] observed the same exception stacktrace in an > application-specific Kryo registrator: > {noformat} > com.esotericsoftware.kryo.KryoException: java.io.IOException: failed to > uncompress the chunk: PARSING_ERROR(2) > com.esotericsoftware.kryo.io.Input.fill(Input.java:142) > com.esotericsoftware.kryo.io.Input.require(Input.java:169) > com.esotericsoftware.kryo.io.Input.readInt(Input.java:325) > com.esotericsoftware.kryo.io.Input.readFloat(Input.java:624) > com.esotericsoftware.kryo.serializers.DefaultSerializers$FloatSerializer.read(DefaultSerializers.java:127) > > com.esotericsoftware.kryo.serializers.DefaultSerializers$FloatSerializer.read(DefaultSerializers.java:117) > > com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:732) > com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:109) > > com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:18) > > com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:732) > ... > {noformat} > This ticket is to identify the cause of the exception in the GraphX commit so > the faulty commit can be fixed and merged back into master. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org