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Posted to dev@parquet.apache.org by "Gabor Szadovszky (JIRA)" <ji...@apache.org> on 2018/04/21 12:39:04 UTC

[jira] [Updated] (PARQUET-384) Add Dictionary Based Filtering to Filter2 API

     [ https://issues.apache.org/jira/browse/PARQUET-384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Szadovszky updated PARQUET-384:
-------------------------------------
    Fix Version/s: 1.8.2

> Add Dictionary Based Filtering to Filter2 API
> ---------------------------------------------
>
>                 Key: PARQUET-384
>                 URL: https://issues.apache.org/jira/browse/PARQUET-384
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-mr
>            Reporter: Daniel Weeks
>            Assignee: Daniel Weeks
>            Priority: Major
>             Fix For: 1.9.0, 1.8.2
>
>
> Dictionary based predicate evaluation show very significant gains for certain cases like the following:
>  - Sparse values in dictionary encoded columns
>  - Data staged sorted by fields used in predicate evaluation
> This would be good to introduce into the filter2 API.



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