Hi All,
I am working with Spark 1.6.0 and pySpark shell specifically. I have an
JavaRDD[org.apache.avro.GenericRecord] which I have converted to pythonRDD
in the following way.
javaRDD = sc._jvm.java.package.loadJson("path to data", sc._jsc)
javaPython = sc._jvm.SerDe.javaToPython(javaRDD)
from pyspark.rdd import RDD
pythonRDD=RDD(javaPython,sc)
pythonRDD.first()
However everytime I am trying to call collect() or first() method on
pythonRDD I am getting the following error :
16/02/11 06:19:19 ERROR python.PythonRunner: Python worker exited
unexpectedly (crashed)
org.apache.spark.api.python.PythonException: Traceback (most recent call
last):
File
"/disk2/spark6/spark-1.6.0-bin-hadoop2.4/python/lib/pyspark.zip/pyspark/worker.py",
line 98, in main
command = pickleSer._read_with_length(infile)
File
"/disk2/spark6/spark-1.6.0-bin-hadoop2.4/python/lib/pyspark.zip/pyspark/serializers.py",
line 156, in _read_with_length
length = read_int(stream)
File
"/disk2/spark6/spark-1.6.0-bin-hadoop2.4/python/lib/pyspark.zip/pyspark/serializers.py",
line 545, in read_int
raise EOFError
EOFError
at
org.apache.spark.api.python.PythonRunner$$anon$1.read(PythonRDD.scala:166)
at
org.apache.spark.api.python.PythonRunner$$anon$1.<init>(PythonRDD.scala:207)
at
org.apache.spark.api.python.PythonRunner.compute(PythonRDD.scala:125)
at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:70)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at
org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66)
at org.apache.spark.scheduler.Task.run(Task.scala:89)
at
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: net.razorvine.pickle.PickleException: couldn't pickle object of
type class org.apache.avro.generic.GenericData$Record
at net.razorvine.pickle.Pickler.save(Pickler.java:142)
at net.razorvine.pickle.Pickler.put_arrayOfObjects(Pickler.java:493)
at net.razorvine.pickle.Pickler.dispatch(Pickler.java:205)
at net.razorvine.pickle.Pickler.save(Pickler.java:137)
at net.razorvine.pickle.Pickler.dump(Pickler.java:107)
at net.razorvine.pickle.Pickler.dumps(Pickler.java:92)
at
org.apache.spark.api.python.SerDeUtil$AutoBatchedPickler.next(SerDeUtil.scala:121)
at
org.apache.spark.api.python.SerDeUtil$AutoBatchedPickler.next(SerDeUtil.scala:110)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at
org.apache.spark.api.python.SerDeUtil$AutoBatchedPickler.foreach(SerDeUtil.scala:110)
at
org.apache.spark.api.python.PythonRDD$.writeIteratorToStream(PythonRDD.scala:452)
at
org.apache.spark.api.python.PythonRunner$WriterThread$$anonfun$run$3.apply(PythonRDD.scala:280)
at
org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1741)
at
org.apache.spark.api.python.PythonRunner$WriterThread.run(PythonRDD.scala:239)
Thanks for your time,
AnoopShiralige
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