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From "Zoltan Haindrich (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-18062) Revise basic stat states for estimations
Date Tue, 14 Nov 2017 15:41:00 GMT
Zoltan Haindrich created HIVE-18062:
---------------------------------------

             Summary: Revise basic stat states for estimations
                 Key: HIVE-18062
                 URL: https://issues.apache.org/jira/browse/HIVE-18062
             Project: Hive
          Issue Type: Sub-task
          Components: Statistics
            Reporter: Zoltan Haindrich


basic stat states might be misleading; because currently estimations also get the *COMPLETE*
qualifier in most cases..

proposed definitions for the states:

* {{NONE}}
   ** on table: no information (afaik currently this can't happen)
   ** estimation tree: all nodes in the estimation tree were NONE
* {{PARTIAL}}:
   ** on table: the current information is estimated from data size
   ** estimation tree: contains at least one NONE/PARTIAL; and at least 1 PARTIAL
* {{COMPLETE}}:
  ** current information is correct (calculated by statstask-s)
   ** estimation tree: the whole subtree has COMPLETE status

document/change states to comply with the above definitions.

followup of HIVE-17934; 




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