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https://issues.apache.org/jira/browse/ORC-40?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15427276#comment-15427276
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Owen O'Malley commented on ORC-40:
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Actually, in Java, you can build up the SearchArgument via the API. Look at the
SearchArgumentFactory. Hive's code uses that API to build it up the
SearchArgument from its AST, but that is layered on top.
No one is currently working on it and it would be great to get it implemented
using an equivalent API to the Java one.
> C++ Reader does not support predicate pushdown.
> -----------------------------------------------
>
> Key: ORC-40
> URL: https://issues.apache.org/jira/browse/ORC-40
> Project: Orc
> Issue Type: New Feature
> Components: C++
> Reporter: Owen O'Malley
>
> The Java reader can push down predicates to filter the data being read. The
> C++ reader doesn't do that yet.
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