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Posted to issues@orc.apache.org by "Quanlong Huang (Jira)" <ji...@apache.org> on 2022/03/24 23:26:00 UTC

[jira] [Assigned] (ORC-969) [C++] Evaluate SearchArguments using file and stripe level stats

     [ https://issues.apache.org/jira/browse/ORC-969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang reassigned ORC-969:
----------------------------------

    Assignee:     (was: Quanlong Huang)

> [C++] Evaluate SearchArguments using file and stripe level stats
> ----------------------------------------------------------------
>
>                 Key: ORC-969
>                 URL: https://issues.apache.org/jira/browse/ORC-969
>             Project: ORC
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.7.0
>            Reporter: Quanlong Huang
>            Priority: Major
>
> Currently in the C++ reader, SearchArguments are only evaluated on RowGroup level stats and bloom filters in SargsApplier::pickRowGroups():
> https://github.com/apache/orc/blob/2143841e24abb2e0fef1a3396376682fc3bb6fea/c%2B%2B/src/sargs/SargsApplier.cc#L65
> We can improve predicate push down to evaluate them on file and stripe level stats.



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