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https://issues.apache.org/jira/browse/SPARK-5777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14550123#comment-14550123
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Cheng Lian commented on SPARK-5777:
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I meant, leaving it for experimentation LGTM.
> Completes data source filter types and remove CatalystScan
> ----------------------------------------------------------
>
> Key: SPARK-5777
> URL: https://issues.apache.org/jira/browse/SPARK-5777
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.2.0, 1.2.1, 1.3.0
> Reporter: Cheng Lian
> Assignee: Cheng Lian
>
> Currently the data source API only supports a fraction of common filters,
> esp. {{And}} is not supported yet. To workaround this issue and enable full
> filter push-down optimization in the Parquet data source, {{CatalystScan}}
> was introduced to receive full Catalyst filter expressions. This class should
> be removed, since in principle, data source implementations shouldn't touch
> Catalyst expressions (which are not part of the public developer API).
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