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https://issues.apache.org/jira/browse/SPARK-41442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17644511#comment-17644511
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Apache Spark commented on SPARK-41442:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/38969
> Only update SQLMetric value if merging with valid metric
> --------------------------------------------------------
>
> Key: SPARK-41442
> URL: https://issues.apache.org/jira/browse/SPARK-41442
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: L. C. Hsieh
> Priority: Minor
>
> We use -1 as initial value of SQLMetric, and change it to 0 while merging
> with other SQLMetric instances. A SQLMetric will be treated as invalid and
> filtered out later.
> While we are developing with Spark, it is trouble behavior that two invalid
> SQLMetric instances merge to a valid SQLMetric because merging will set the
> value to 0.
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