[jira] [Resolved] (SPARK-24321) Extract common code from Divide/Remainder to a base trait

["Wenchen Fan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-24321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-24321.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 2.4.0

Issue resolved by pull request 21367
[https://github.com/apache/spark/pull/21367]

> Extract common code from Divide/Remainder to a base trait
> ---------------------------------------------------------
>
>                 Key: SPARK-24321
>                 URL: https://issues.apache.org/jira/browse/SPARK-24321
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Kris Mok
>            Assignee: Kris Mok
>            Priority: Minor
>             Fix For: 2.4.0
>
>
> There's a lot of code duplication between {{Divide}} and {{Remainder}} expression types. They're mostly the codegen template (which is exactly the same, with just cosmetic differences), the eval function structure, etc.
> It tedious to have to update multiple places in case we make improvements to the codegen templates in the future. This ticket proposes to refactor the duplicate code into a common base trait for these two classes.
> Non-goal: There another class, {{Pmod}}, that is also similiar to {{Divide}} and {{Remainder}}, so in theory we can make a deeper refactoring to accommodate this class as well. But the "operation" part of its codegen template is harder to factor into the base trait, so this ticket only handles {{Divide}} and {{Remainder}} for now.



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