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https://issues.apache.org/jira/browse/HIVE-4246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley updated HIVE-4246:
--------------------------------
Status: Patch Available (was: Open)
This patch:
* Adds the column names for the required columns
* Uses the SearchArgument interface added in HIVE-4579
* Updates the ORC reader to skip over sets of rows that aren't useful.
* Extends InStream to read from multiple sets of byte buffers
* Updates the ORC reader to skip over ignored rows after each next
> Implement predicate pushdown for ORC
> ------------------------------------
>
> Key: HIVE-4246
> URL: https://issues.apache.org/jira/browse/HIVE-4246
> Project: Hive
> Issue Type: New Feature
> Components: File Formats
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Attachments: HIVE-4246.D11415.1.patch
>
>
> By using the push down predicates from the table scan operator, ORC can skip
> over 10,000 rows at a time that won't satisfy the predicate. This will help a
> lot, especially if the file is sorted by the column that is used in the
> predicate.
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