[jira] [Resolved] (HIVE-16017) MM tables - many queries duplicate the data after master merge

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

     [ https://issues.apache.org/jira/browse/HIVE-16017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Shelukhin resolved HIVE-16017.
-------------------------------------
    Resolution: Fixed

Stupid merge issue in Utilities...

> MM tables - many queries duplicate the data after master merge
> --------------------------------------------------------------
>
>                 Key: HIVE-16017
>                 URL: https://issues.apache.org/jira/browse/HIVE-16017
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Sergey Shelukhin
>
> Update: happens on many more queries it looks like, and started happening after a recent master merge after I wasn't working on the feature for a while
> 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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