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Posted to dev@parquet.apache.org by "Julien Le Dem (JIRA)" <ji...@apache.org> on 2017/06/07 22:39:18 UTC

[jira] [Commented] (PARQUET-686) Allow for Unsigned Statistics in Binary Type

    [ https://issues.apache.org/jira/browse/PARQUET-686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16041802#comment-16041802 ] 

Julien Le Dem commented on PARQUET-686:
---------------------------------------

The first issue of not returning bad stats was solved in: https://github.com/apache/parquet-mr/commit/de99127d77dabfc6c8134b3c58e0b9a0b74e5f37

> Allow for Unsigned Statistics in Binary Type
> --------------------------------------------
>
>                 Key: PARQUET-686
>                 URL: https://issues.apache.org/jira/browse/PARQUET-686
>             Project: Parquet
>          Issue Type: Bug
>            Reporter: Andrew Duffy
>
> BinaryStatistics currently only have a min/max, which are compared as signed {{byte[]}}. However, for real UTF8-friendly lexicographic comparison, e.g. for string columns, we would want to calculate the BinaryStatistics based off of a comparator that treats the bytes as unsigned.



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