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https://issues.apache.org/jira/browse/SPARK-48431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-48431.
---------------------------------
Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 46760
[https://github.com/apache/spark/pull/46760]
> Do not forward predicates on collated columns to file readers
> -------------------------------------------------------------
>
> Key: SPARK-48431
> URL: https://issues.apache.org/jira/browse/SPARK-48431
> Project: Spark
> Issue Type: Task
> Components: Spark Core
> Affects Versions: 4.0.0
> Reporter: Jan-Ole Sasse
> Assignee: Jan-Ole Sasse
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
>
> SPARK-47657 allows to push filters on collated columns to file sources that
> support it. If such filters are pushed to file sources, those file sources
> must not push those filters to the actual file readers (i.e. parquet or csv
> readers), because there is no guarantee that those support collations.
> With this task, we are widening filters on collations to be AlwaysTrue when
> we translate filters for file sources.
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