[jira] [Created] (HIVE-16017) MM tables - buckets + union is broken

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

Sergey Shelukhin created HIVE-16017:
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             Summary: MM tables - buckets + union is broken
                 Key: HIVE-16017
                 URL: https://issues.apache.org/jira/browse/HIVE-16017
             Project: Hive
          Issue Type: Sub-task
            Reporter: Sergey Shelukhin


This duplicates the data (given that the original query is a self-union, essentially outputs it 4 times instead of 2) for either MM or non-MM tables, on MM branch.

It seems to be adding correct inputs (esp. in non-MM case the inputs are the same as before). Presumably something in the output changes in the branch is broken for this case. Not sure what yet. 

{noformat}
CREATE TABLE tbl1_mm(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS;
insert overwrite table tbl1_mm select * from src where key < 10;

select key, value from tbl1_mm a where key < 6
union all
select key, value from tbl1_mm a where key < 6;
{noformat}



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