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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/07/31 12:37:00 UTC

[jira] [Commented] (SPARK-32509) Unused DPP Filter causes issue in canonicalization and prevents reuse exchange

    [ https://issues.apache.org/jira/browse/SPARK-32509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168831#comment-17168831 ] 

Apache Spark commented on SPARK-32509:
--------------------------------------

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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