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Posted to issues@hive.apache.org by "Prasanth Jayachandran (Jira)" <ji...@apache.org> on 2020/03/06 10:47:00 UTC

[jira] [Commented] (HIVE-22979) Support total file size in statistics annotation

    [ https://issues.apache.org/jira/browse/HIVE-22979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053287#comment-17053287 ] 

Prasanth Jayachandran commented on HIVE-22979:
----------------------------------------------

[~jcamachorodriguez]/[~vgarg] can someone please review?

> Support total file size in statistics annotation
> ------------------------------------------------
>
>                 Key: HIVE-22979
>                 URL: https://issues.apache.org/jira/browse/HIVE-22979
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 4.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Minor
>              Labels: pull-request-available
>         Attachments: HIVE-22979.1.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Hive statistics annotation provide estimated Statistics for each operator. The data size provided in TableScanOperator is raw data size (after decompression and decoding), but there are some optimizations that can be performed based on total file size on disk (scan cost estimation).



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