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Posted to issues@spark.apache.org by "Kazuaki Ishizaki (JIRA)" <ji...@apache.org> on 2017/12/09 17:00:00 UTC

[jira] [Updated] (SPARK-22746) Avoid the generation of useless mutable states by SortMergeJoin

     [ https://issues.apache.org/jira/browse/SPARK-22746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kazuaki Ishizaki updated SPARK-22746:
-------------------------------------
    Issue Type: Sub-task  (was: Bug)
        Parent: SPARK-22692

> Avoid the generation of useless mutable states by SortMergeJoin
> ---------------------------------------------------------------
>
>                 Key: SPARK-22746
>                 URL: https://issues.apache.org/jira/browse/SPARK-22746
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Kazuaki Ishizaki
>
> Generated code in {{SortMergeJoin}} uses global mutable variables to extend lifetime of variables in a nested loop. The generated code can use local variables instead of global mutable variables.



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