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Posted to issues@spark.apache.org by "Adam Binford (Jira)" <ji...@apache.org> on 2021/05/19 23:22:00 UTC
[jira] [Comment Edited] (SPARK-35448) Subexpression elimination
enhancements
[ https://issues.apache.org/jira/browse/SPARK-35448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347976#comment-17347976 ]
Adam Binford edited comment on SPARK-35448 at 5/19/21, 11:21 PM:
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Just spitballing after looking through some of the subexpression elimination code. Does it make any sense to treat the output of EquivalentExpressions as "candidates" for subexpressions, and then it's the codegen's job to figure out which subexpressions are actually needed and used and include the code for them?
was (Author: kimahriman):
Just spitballing after looking through some of the subexpression elimination code. Does it make more sense to treat the output of EquivalentExpressions as "candidates" for subexpressions, and then it's the codegen's job to figure out which subexpressions are actually needed and used and include the code for them?
> Subexpression elimination enhancements
> --------------------------------------
>
> Key: SPARK-35448
> URL: https://issues.apache.org/jira/browse/SPARK-35448
> Project: Spark
> Issue Type: Umbrella
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: L. C. Hsieh
> Priority: Major
>
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