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https://issues.apache.org/jira/browse/HIVE-5193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sushanth Sowmyan updated HIVE-5193:
-----------------------------------
Release Note: (Columnar pushdown will now work with HCatLoader - basically,
what this means is that when using RC/ORC tables, not all rows are necessarily
read and processed if pig would discard (by filtering) it anyway. This allows
reads to be a bit faster.)
> Columnar Pushdown for RC/ORC File not happening in HCatLoader
> --------------------------------------------------------------
>
> Key: HIVE-5193
> URL: https://issues.apache.org/jira/browse/HIVE-5193
> Project: Hive
> Issue Type: Improvement
> Components: HCatalog
> Affects Versions: 0.10.0, 0.11.0, 0.12.0
> Reporter: Viraj Bhat
> Assignee: Viraj Bhat
> Labels: hcatalog
> Fix For: 0.13.0
>
> Attachments: HIVE-5193.2.patch, HIVE-5193.patch
>
>
> Currently the HCatLoader is not taking advantage of the
> ColumnProjectionUtils. where it could skip columns during read. The
> information is available in Pig it just needs to get to the Readers.
> Viraj
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