[jira] [Created] (SPARK-18888) partitionBy in DataStreamWriter in Python throws _to_seq not defined

["Burak Yavuz (JIRA)" <ji...@apache.org>]

Burak Yavuz created SPARK-18888:
-----------------------------------

             Summary: partitionBy in DataStreamWriter in Python throws _to_seq not defined
                 Key: SPARK-18888
                 URL: https://issues.apache.org/jira/browse/SPARK-18888
             Project: Spark
          Issue Type: Bug
          Components: PySpark, Structured Streaming
    Affects Versions: 2.1.0
            Reporter: Burak Yavuz
            Priority: Blocker


{code}
python/pyspark/sql/streaming.py in partitionBy(self, *cols)
    716         if len(cols) == 1 and isinstance(cols[0], (list, tuple)):
    717             cols = cols[0]
--> 718         self._jwrite = self._jwrite.partitionBy(_to_seq(self._spark._sc, cols))
    719         return self
    720 

NameError: global name '_to_seq' is not defined
{code}



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