[jira] [Updated] (HIVE-14362) Support explain analyze in Hive

["Zoltan Haindrich (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-14362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich updated HIVE-14362:
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    Labels:   (was: TODOC2.2)

This was still not mentioned in the docs; I've added it.

> Support explain analyze in Hive
> -------------------------------
>
>                 Key: HIVE-14362
>                 URL: https://issues.apache.org/jira/browse/HIVE-14362
>             Project: Hive
>          Issue Type: New Feature
>    Affects Versions: 2.1.0
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>            Priority: Major
>             Fix For: 2.2.0
>
>         Attachments: HIVE-14362.01.patch, HIVE-14362.02.patch, HIVE-14362.03.patch, HIVE-14362.05.patch, HIVE-14362.06.patch, compare_on_cluster.pdf
>
>
> Right now all the explain levels only support stats before query runs. We would like to have an explain analyze similar to Postgres for real stats after query runs. This will help to identify the major gap between estimated/real stats and make not only query optimization better but also query performance debugging easier.



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