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Posted to dev@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2016/07/27 21:05:20 UTC

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

Pengcheng Xiong created HIVE-14362:
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             Summary: Support explain analyze in Hive
                 Key: HIVE-14362
                 URL: https://issues.apache.org/jira/browse/HIVE-14362
             Project: Hive
          Issue Type: New Feature
            Reporter: Pengcheng Xiong
            Assignee: Pengcheng Xiong


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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