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Posted to dev@hive.apache.org by "Remus Rusanu (JIRA)" <ji...@apache.org> on 2017/01/25 08:12:26 UTC

[jira] [Created] (HIVE-15723) Hive should report a warning about missing table/column statistics to user.

Remus Rusanu created HIVE-15723:
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             Summary: Hive should report a warning about missing table/column statistics to user.
                 Key: HIVE-15723
                 URL: https://issues.apache.org/jira/browse/HIVE-15723
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
            Reporter: Remus Rusanu
            Assignee: Remus Rusanu
            Priority: Minor


Many Hive performance issues are due to missing statistics. Either all, table or column statistics are missing. Potentially a new partition has been added and customer forgot to gather stats for that partition.
A simple warning about a table or column missing statistics can be very helpful and makes hive more user friendly. Hive already has this information, its a matter of printing it out.



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