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https://issues.apache.org/jira/browse/SPARK-53809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-53809:
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Labels: pull-request-available (was: )
> Add canonicalization for dsv2 scan
> ----------------------------------
>
> Key: SPARK-53809
> URL: https://issues.apache.org/jira/browse/SPARK-53809
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Yuchuan Huang
> Priority: Major
> Labels: pull-request-available
>
> Query optimization rules such as MergeScalarSubqueries check if two plans are
> identical by [comparing their canonicalized form|#L219]. For DSv2, the
> comparison goes down to DataSourceV2ScanRelation in the hierarchy, which
> currently lacks of canonicalize function.
>
> This ticket aims to add doCanonicalize function for DataSourceV2ScanRelation,
> as well as the Scan interface. The reason is that two identical scan may have
> predicates in different order during QO rewrite. As a reference, [FileScan
> normalizes filters in def equal()|#L107]]
>
>
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