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Subject [jira] [Created] (HIVE-18913) Change DataType to Collection or Set
Date Thu, 08 Mar 2018 21:38:00 GMT
BELUGA BEHR created HIVE-18913:

             Summary: Change DataType to Collection or Set
                 Key: HIVE-18913
             Project: Hive
          Issue Type: Improvement
          Components: HiveServer2
    Affects Versions: 3.0.0, 2.4.0
            Reporter: BELUGA BEHR

Please change the signature of these methods to be {{Set}} or {{Collection}}

public static List<String> getColumnNames*

Often these calls are being used to get a list of columns, then searched through.  It would
be more performant (and database set-theory correct) if the returned data type was a {{Set}}
and not a {{List}}.  And they should probably be immutable collections returned as well.

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