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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/03/01 14:32:45 UTC

[jira] [Commented] (SPARK-19786) Facilitate loop optimizations in a JIT compiler regarding range()

    [ https://issues.apache.org/jira/browse/SPARK-19786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15890271#comment-15890271 ] 

Apache Spark commented on SPARK-19786:
--------------------------------------

User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/17122

> Facilitate loop optimizations in a JIT compiler regarding range()
> -----------------------------------------------------------------
>
>                 Key: SPARK-19786
>                 URL: https://issues.apache.org/jira/browse/SPARK-19786
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: Kazuaki Ishizaki
>
> [This article|https://databricks.com/blog/2017/02/16/processing-trillion-rows-per-second-single-machine-can-nested-loop-joins-fast.html] suggests that better generated code can improve performance by facilitating compiler optimizations.
> This JIRA changes the generated code for {{range()}} to facilitate loop optimizations in a JIT compiler for achieving better performance.



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