Alexis Benoist created SPARK-9488:
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             Summary: pyspark.sql.types.Row very slow when used named arguments
                 Key: SPARK-9488
                 URL: https://issues.apache.org/jira/browse/SPARK-9488
             Project: Spark
          Issue Type: Bug
          Components: PySpark
    Affects Versions: 1.4.0
         Environment: 

            Reporter: Alexis Benoist


We can see that the implementation of the Row is accessing items in O(n).
https://github.com/apache/spark/blob/master/python/pyspark/sql/types.py#L1217
We could use an OrderedDict instead of a tuple to make the access time in O(1). 
Can the keys be of an unhashable type?

I'm ok to do the edit.

Cheers,
Alexis.



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