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From "Fengdong Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4891) Distinct includes duplicate records
Date Fri, 19 Jul 2013 08:52:48 GMT
Fengdong Yu created HIVE-4891:
---------------------------------

             Summary: Distinct includes duplicate records
                 Key: HIVE-4891
                 URL: https://issues.apache.org/jira/browse/HIVE-4891
             Project: Hive
          Issue Type: Bug
          Components: HiveServer2
    Affects Versions: 0.10.0
            Reporter: Fengdong Yu


I have two partitions, one is sequence file, another is RCFile, but they are the same data(only
different file format).

I have the following SQL:
{code}
select distinct uid from pv where (dt ='20130718' or dt ='20130718_1') and cur_url like '%cq.aa.com%';
{code}

dt ='20130718' is sequence file,(default input format, which specified when create table)
 
dt ='20130718_1' is RCFile.
ALTER TABLE test PARTITION(dt='20130718_1') SET FILEFORMAT RCFILE;

but there are duplicate recoreds in the result.

If two partitions with the same input format, then there are no duplicate records.


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