[
https://issues.apache.org/jira/browse/SPARK-27714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16840370#comment-16840370
]
Xianyin Xin commented on SPARK-27714:
-------------------------------------
[~hyukjin.kwon] Thanks for reminding.
[~hyukjin.kwon] [~viirya] Thank you for comments. I'm working on a doc, will
post it later on.
> Support Join Reorder based on Genetic Algorithm when the # of joined tables >
> 12
> --------------------------------------------------------------------------------
>
> Key: SPARK-27714
> URL: https://issues.apache.org/jira/browse/SPARK-27714
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.3
> Reporter: Xianyin Xin
> Priority: Major
>
> Now the join reorder logic is based on dynamic planning which can find the
> most optimized plan theoretically, but the searching cost grows rapidly with
> the # of joined tables grows. It would be better to introduce Genetic
> algorithm (GA) to overcome this problem.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
