Github user JoshRosen commented on the pull request: https://github.com/apache/spark/pull/2030#issuecomment-52597491 Ran into some task failures when testing this commit on EC2 with the SchedulerThroughputTest: ``` 14/08/19 07:01:24 WARN scheduler.TaskSetManager: Lost task 5.0 in stage 995.0 (TID 9974, ip-172-31-24-16.us-west-2.compute.internal): java.io.IOException: FAILED_TO_UNCOMPRESS(5) org.xerial.snappy.SnappyNative.throw_error(SnappyNative.java:84) org.xerial.snappy.SnappyNative.rawUncompress(Native Method) org.xerial.snappy.Snappy.rawUncompress(Snappy.java:444) org.xerial.snappy.Snappy.uncompress(Snappy.java:480) org.xerial.snappy.SnappyInputStream.readFully(SnappyInputStream.java:127) org.xerial.snappy.SnappyInputStream.readHeader(SnappyInputStream.java:88) org.xerial.snappy.SnappyInputStream.<init>(SnappyInputStream.java:58) org.apache.spark.io.SnappyCompressionCodec.compressedInputStream(CompressionCodec.scala:127) org.apache.spark.broadcast.TorrentBroadcast$.unBlockifyObject(TorrentBroadcast.scala:214) org.apache.spark.broadcast.TorrentBroadcast.readObject(TorrentBroadcast.scala:151) sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:606) java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893) java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990) java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915) java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798) java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350) java.io.ObjectInputStream.readObject(ObjectInputStream.java:370) org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:62) org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:87) org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:184) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:745) ```
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