[jira] [Created] (SPARK-14202) python_full_outer_join should use generator expression instead of list comp

["Maciej Szymkiewicz (JIRA)" <ji...@apache.org>]

Maciej Szymkiewicz created SPARK-14202:
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             Summary: python_full_outer_join should use generator expression instead of list comp
                 Key: SPARK-14202
                 URL: https://issues.apache.org/jira/browse/SPARK-14202
             Project: Spark
          Issue Type: Improvement
          Components: PySpark
    Affects Versions: 1.6.0, 1.5.0, 1.4.0, 1.3.0, 2.0.0
            Reporter: Maciej Szymkiewicz


At this moment {{python_full_outer_join}} is the only join operation on Python RDDs which uses list comprehension instead of generator expression in its {{dispatch}} function.

It doesn't look like there is any particular reason that could justify this choice and it can lead to serious performance issues.



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