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

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-14202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15214367#comment-15214367 ] 

Apache Spark commented on SPARK-14202:
--------------------------------------

User 'zero323' has created a pull request for this issue:
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: 1.3.0, 1.4.0, 1.5.0, 1.6.0, 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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