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https://issues.apache.org/jira/browse/SPARK-11621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998014#comment-14998014
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Hyukjin Kwon commented on SPARK-11621:
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I would like to work this.
> ORC filter pushdown not working properly after new unhandled filter interface.
> ------------------------------------------------------------------------------
>
> Key: SPARK-11621
> URL: https://issues.apache.org/jira/browse/SPARK-11621
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.6.0
> Reporter: Hyukjin Kwon
>
> After we get the new interface to get rid of filters predicate-push-downed
> which are processed in datasource-level
> (https://github.com/apache/spark/pull/9399), it dose not push down filters
> for ORC.
> This is because at {{DataSourceStrategy}}, it is classified to scanning
> non-partitioned HadoopFsRelation, and all the filters are treated as
> unhandled filters.
> Also, since ORC does not support to filter fully record by record but instead
> rough results came out, the filters for ORC should not go to unhandled
> filters.
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