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https://issues.apache.org/jira/browse/SPARK-35215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17331430#comment-17331430
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Apache Spark commented on SPARK-35215:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/32330
> Update custom metrics per certain rows
> --------------------------------------
>
> Key: SPARK-35215
> URL: https://issues.apache.org/jira/browse/SPARK-35215
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
>
> We should only update custom metrics per certain (e.g. 100) rows. It helps to
> reduce performance impact on scan.
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