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Posted to issues@hive.apache.org by "Chao Sun (JIRA)" <ji...@apache.org> on 2016/07/22 23:55:20 UTC

[jira] [Work started] (HIVE-14315) Implement StatsProvidingRecordReader for ParquetRecordReaderWrapper

     [ https://issues.apache.org/jira/browse/HIVE-14315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-14315 started by Chao Sun.
---------------------------------------
> Implement StatsProvidingRecordReader for ParquetRecordReaderWrapper
> -------------------------------------------------------------------
>
>                 Key: HIVE-14315
>                 URL: https://issues.apache.org/jira/browse/HIVE-14315
>             Project: Hive
>          Issue Type: New Feature
>          Components: Statistics
>    Affects Versions: 2.1.0
>            Reporter: Chao Sun
>            Assignee: Chao Sun
>         Attachments: HIVE-14315.0.patch
>
>
> Currently only ORC supports {{analyze table ... compute statistics noscan}} (via HIVE-6578) where stats such as # of rows, raw datasize, etc., can be obtained via the footer. The similar functionality should be implemented on Parquet since it also has the info in the metadata.



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