[jira] Updated: (HIVE-205) file sink operator needs unique file names

["Ashish Thusoo (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashish Thusoo updated HIVE-205:
-------------------------------

    Priority: Critical  (was: Major)

Needed for the first release.


> file sink operator needs unique file names
> ------------------------------------------
>
>                 Key: HIVE-205
>                 URL: https://issues.apache.org/jira/browse/HIVE-205
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Zheng Shao
>            Priority: Critical
>
> a query like "SELECT * FROM (SELECT 'a' from table UNION ALL SELECT 'b' from table) c" will fail, because the 2 sub queries of "UNION" will be executed inside the same mapper (because the input is the same) towards the same destination table, and the 2 file sink operators will have the same output file name.
> We need to append the file sink operator id to the file name to make it unique.

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