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https://issues.apache.org/jira/browse/SPARK-32509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168831#comment-17168831
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Apache Spark commented on SPARK-32509:
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User 'prakharjain09' has created a pull request for this issue:
https://github.com/apache/spark/pull/29318
> Unused DPP Filter causes issue in canonicalization and prevents reuse exchange
> ------------------------------------------------------------------------------
>
> Key: SPARK-32509
> URL: https://issues.apache.org/jira/browse/SPARK-32509
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0, 3.0.1, 3.1.0
> Reporter: Prakhar Jain
> Priority: Major
>
> As part of PlanDynamicPruningFilter rule, the unused DPP Filter are simply
> replaced by `DynamicPruningExpression(TrueLiteral)` so that they can be
> avoided. But these unnecessary`DynamicPruningExpression(TrueLiteral)`
> partition filter inside the FileSourceScanExec affects the canonicalization
> of the node and so in many cases, this can prevent ReuseExchange from
> happening.
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