Github user mateiz commented on a diff in the pull request:
https://github.com/apache/spark/pull/755#discussion_r13165029
--- Diff: python/pyspark/context.py ---
@@ -51,6 +51,7 @@ class SparkContext(object):
_active_spark_context = None
_lock = Lock()
_python_includes = None # zip and egg files that need to be added to
PYTHONPATH
+ _pickle_file_serializer = BatchedSerializer(PickleSerializer(), 1024)
--- End diff --
You should make batches smaller than 1024 by default, because some objects
users work with might be very large. I'd set it to only 10. If you'd like, you
can add an optional batchSize parameter to RDD.saveAsPickleFile.
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