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https://issues.apache.org/jira/browse/SPARK-14202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-14202.
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Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 11998
[https://github.com/apache/spark/pull/11998]
> 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: 1.4.0, 1.5.0, 1.6.0, 2.0.0
> Reporter: Maciej Szymkiewicz
> Fix For: 2.0.0
>
>
> 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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