[jira] [Created] (SPARK-10122) AttributeError: 'RDD' object has no attribute 'offsetRanges'

["Amit Ramesh (JIRA)" <ji...@apache.org>]

Amit Ramesh created SPARK-10122:
-----------------------------------

             Summary: AttributeError: 'RDD' object has no attribute 'offsetRanges'
                 Key: SPARK-10122
                 URL: https://issues.apache.org/jira/browse/SPARK-10122
             Project: Spark
          Issue Type: Bug
          Components: PySpark, Streaming
            Reporter: Amit Ramesh
            Priority: Critical


SPARK-8337 added the offsetRanges interface to Kafka direct streams. This however appears to break when chaining operations after a transform operation. Following is example code that would result in an error (stack trace below). Note that if the 'count()' operation is taken out of the example code then this error does not occur anymore, and the Kafka data is printed.

{code:title=kafka_test.py|collapse=true}
from pyspark import SparkContext
from pyspark.streaming import StreamingContext
from pyspark.streaming.kafka import KafkaUtils

def attach_kafka_metadata(kafka_rdd):
    offset_ranges = kafka_rdd.offsetRanges()

    return kafka_rdd


if __name__ == "__main__":
    sc = SparkContext(appName='kafka-test')
    ssc = StreamingContext(sc, 10)

    kafka_stream = KafkaUtils.createDirectStream(
        ssc,
        [TOPIC],
        kafkaParams={
            'metadata.broker.list': BROKERS,
        },
    )
    kafka_stream.transform(attach_kafka_metadata).count().pprint()

    ssc.start()
    ssc.awaitTermination()
{code}

{code:Stack trace|collapse=true}
Traceback (most recent call last):
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/util.py", line 62, in call
    r = self.func(t, *rdds)
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/dstream.py", line 616, in <lambda>
    self.func = lambda t, rdd: func(t, prev_func(t, rdd))
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/dstream.py", line 616, in <lambda>
    self.func = lambda t, rdd: func(t, prev_func(t, rdd))
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/dstream.py", line 616, in <lambda>
    self.func = lambda t, rdd: func(t, prev_func(t, rdd))
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/dstream.py", line 616, in <lambda>
    self.func = lambda t, rdd: func(t, prev_func(t, rdd))
  File "/home/spark/spark/python/lib/pyspark.zip/pyspark/streaming/kafka.py", line 332, in <lambda>
    func = lambda t, rdd: oldfunc(rdd)
  File "/home/spark/ad_realtime/batch/kafka_test.py", line 7, in attach_kafka_metadata
    offset_ranges = kafka_rdd.offsetRanges()
AttributeError: 'RDD' object has no attribute 'offsetRanges'
{code}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org