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https://issues.apache.org/jira/browse/SPARK-46644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-46644.
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Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 44649
[https://github.com/apache/spark/pull/44649]
> Fix add in SQLMetric
> --------------------
>
> Key: SPARK-46644
> URL: https://issues.apache.org/jira/browse/SPARK-46644
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.5.0
> Reporter: Davin Tjong
> Assignee: Davin Tjong
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
>
> A previous refactor mistakenly used `isValid` for add. Since
> `defaultValidValue` was always `0`, this didn't cause any correctness issues.
> What we really want to do for add (and merge) is `if (isZero) _value = 0`.
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