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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14315) Implement StatsProvidingRecordReader for ParquetRecordReaderWrapper
Date Mon, 25 Jul 2016 20:41:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15392628#comment-15392628
] 

Xuefu Zhang commented on HIVE-14315:
------------------------------------

+1

> 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, HIVE-14315.1.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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