[jira] [Created] (SPARK-16950) fromOffsets parameter in Kafka's Direct Streams does not work in python3

["Mariusz Strzelecki (JIRA)" <ji...@apache.org>]

Mariusz Strzelecki created SPARK-16950:
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             Summary: fromOffsets parameter in Kafka's Direct Streams does not work in python3
                 Key: SPARK-16950
                 URL: https://issues.apache.org/jira/browse/SPARK-16950
             Project: Spark
          Issue Type: Bug
          Components: PySpark
    Affects Versions: 2.0.0, 2.0.1, 2.1.0
            Reporter: Mariusz Strzelecki


KafkaUtils.createDirectStream does not work in python3 when you set parameter fromOffsets (which is starting offsets of the stream on Kafka). This is because the {{long}} type is removed from python3 and py4j maps numeric variables to {{java.lang.Integer}} or {{java.lang.Long}} depending on number size, which causes ClassCastException for small offsets variables.

This behaviour was noticed before and tests for this functionality are disabled in python3: https://github.com/apache/spark/blob/89e67d6667d5f8be9c6fb6c120fbcd350ae2950d/python/pyspark/streaming/tests.py#L1061



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