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https://issues.apache.org/jira/browse/HIVE-4345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yifeng Geng updated HIVE-4345:
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Description: Serialize "predicate" conditions in query plan to MapredWork
class, so the FileFormat class can use the conditions to do on-the-fly
filtering on the files. It can improve the performance a lot for processsing
certain binary files(NetCDF files for example). (was: Serialize "predicate"
conditions in query plan to MapredWork class, so the FileFormat class can use
the conditions to do on-the-fly filtering on the files. It can improve the
performance a lot for processsing certain binary files.)
> Pushing down query conditions to support on-the-fly filtering at file parsing
> -----------------------------------------------------------------------------
>
> Key: HIVE-4345
> URL: https://issues.apache.org/jira/browse/HIVE-4345
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor
> Affects Versions: 0.10.0
> Reporter: Yifeng Geng
> Labels: patch
> Fix For: 0.10.0
>
> Attachments: HIVE-4345.patch
>
>
> Serialize "predicate" conditions in query plan to MapredWork class, so the
> FileFormat class can use the conditions to do on-the-fly filtering on the
> files. It can improve the performance a lot for processsing certain binary
> files(NetCDF files for example).
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