Disallow useless DISTRIBUTE BY/SORT BY/CLUSTER BY in strict mode
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                 Key: HIVE-2537
                 URL: https://issues.apache.org/jira/browse/HIVE-2537
             Project: Hive
          Issue Type: Improvement
            Reporter: Adam Kramer
            Priority: Minor


This query:

CREATE TABLE my_tablename AS
SELECT a, b, c
FROM somewhere
CLUSTER BY c;

...has an unnecessary CLUSTER BY, because the resulting data will be loaded 
into a non-bucketed table without any enforcement of bucketing. We should 
disallow this in strict mode.

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