Github user davies commented on the pull request:
https://github.com/apache/spark/pull/2681#issuecomment-59120483
Sometimes hit this bug during pyspark testing
```
Py4JJavaError: An error occurred while calling o55.collect. :
org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in
stage 5.0 failed 1 times, most recent failure: Lost task 0.0 in stage 5.0 (TID
8, localhost): java.io.IOException: PARSING_ERROR(2)
[info]
org.xerial.snappy.SnappyNative.throw_error(SnappyNative.java:84)
[info] org.xerial.snappy.SnappyNative.uncompressedLength(Native
Method)
[info] org.xerial.snappy.Snappy.uncompressedLength(Snappy.java:594)
[info]
org.xerial.snappy.SnappyInputStream.readFully(SnappyInputStream.java:125)
[info]
org.xerial.snappy.SnappyInputStream.readHeader(SnappyInputStream.java:88)
[info]
org.xerial.snappy.SnappyInputStream.<init>(SnappyInputStream.java:58)
[info]
org.apache.spark.io.SnappyCompressionCodec.compressedInputStream(CompressionCodec.scala:128)
[info]
org.apache.spark.broadcast.TorrentBroadcast$.unBlockifyObject(TorrentBroadcast.scala:216)
[info]
org.apache.spark.broadcast.TorrentBroadcast.readObject(TorrentBroadcast.scala:170)
[info] sun.reflect.GeneratedMethodAccessor125.invoke(Unknown Source)
[info]
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[info] java.lang.reflect.Method.invoke(Method.java:606)
[info]
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
[info]
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
[info]
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
[info]
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
[info]
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
[info]
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
[info]
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
[info]
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
[info]
java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
[info]
org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:62)
[info]
org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:87)
[info]
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:164)
[info]
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[info]
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[info] java.lang.Thread.run(Thread.java:745)
[info] Driver stacktrace:
[info] at
```
The test is really simple:
```
sc.parallelize(range(10)).count()
```
The serialized PythonRDD is about 4.1k, so I would like to increase the
EMBED_SIZE to 8k, then most of the simple PythonRDD will be embedded, to make
tests stable.
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