[jira] [Created] (HIVE-4174) Round UDF converts BigInts to double

["Mark Grover (JIRA)" <ji...@apache.org>]

Mark Grover created HIVE-4174:
---------------------------------

             Summary: Round UDF converts BigInts to double
                 Key: HIVE-4174
                 URL: https://issues.apache.org/jira/browse/HIVE-4174
             Project: Hive
          Issue Type: Bug
          Components: UDF
    Affects Versions: 0.10.0
            Reporter: Mark Grover
            Assignee: Mark Grover
             Fix For: 0.11.0


Chen Chun pointed out on the hive-user mailing list that round() in Hive 0.10 returns
{code}
select round(cast(1234560 as BIGINT)), round(cast(12345670 as BIGINT)) from test limit 1;

//hive 0.10
1234560.0  1.234567E7
{code}

This is not consistent with MySQL(http://dev.mysql.com/doc/refman/5.1/en/mathematical-functions.html#function_round)

which quotes
{code}
The return type is the same type as that of the first argument (assuming that it is integer, double, or decimal). This means that for an integer argument, the result is an integer (no decimal places)
{code}

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