[
https://issues.apache.org/jira/browse/HIVE-4891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713722#comment-13713722
]
Edward Capriolo commented on HIVE-4891:
---------------------------------------
I suspect there are some funny issues when partitions are not the same format,
this is a newish feature and we may not have as much coverage as we need.
> Distinct includes duplicate records
> -----------------------------------
>
> Key: HIVE-4891
> URL: https://issues.apache.org/jira/browse/HIVE-4891
> Project: Hive
> Issue Type: Bug
> Components: File Formats, HiveServer2, Query Processor
> 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 test 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.
> {code}
> ALTER TABLE test ADD IF NOT EXISTS PARTITION (dt='20130718_1') LOCATION
> '/user/test/test-data'
> ALTER TABLE test PARTITION(dt='20130718_1') SET FILEFORMAT RCFILE;
> {code}
> but there are duplicate recoreds in the result.
> If two partitions with the same input format, then there are no duplicate
> records.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
