Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/4723#discussion_r25986002
--- Diff: python/pyspark/streaming/kafka.py ---
@@ -70,7 +71,103 @@ def createStream(ssc, zkQuorum, groupId, topics,
kafkaParams={},
except Py4JJavaError, e:
# TODO: use --jar once it also work on driver
if 'ClassNotFoundException' in str(e.java_exception):
- print """
+ KafkaUtils._printErrorMsg(ssc.sparkContext)
+ raise e
+ ser = PairDeserializer(NoOpSerializer(), NoOpSerializer())
+ stream = DStream(jstream, ssc, ser)
+ return stream.map(lambda (k, v): (keyDecoder(k), valueDecoder(v)))
+
+ @staticmethod
+ def createDirectStream(ssc, brokerList, topics, kafkaParams={},
--- End diff --
We should also allow creating direct stream with offsets and specify
optional leaders. That is, all the stuff the advanced version of
createDirectStream supports. The only thing that we cannot easily support in
python, is the custom function MessagAndMetadata => R. Other than that we
should be able to do others.
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