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Posted to dev@parquet.apache.org by "Daniel Weeks (JIRA)" <ji...@apache.org> on 2015/09/25 00:49:04 UTC

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

Daniel Weeks created PARQUET-384:
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             Summary: 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


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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