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Posted to issues@spark.apache.org by "Zhenhua Wang (JIRA)" <ji...@apache.org> on 2017/03/28 07:52:41 UTC

[jira] [Created] (SPARK-20124) Join reorder should keep the same order of final project attributes

Zhenhua Wang created SPARK-20124:
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             Summary: Join reorder should keep the same order of final project attributes
                 Key: SPARK-20124
                 URL: https://issues.apache.org/jira/browse/SPARK-20124
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 2.2.0
            Reporter: Zhenhua Wang


Join reorder algorithm should keep exactly the same order of output attributes in the top project. 
For example, if user want to select a, b, c, after reordering, we should output a, b, c in the same order as specified by user, instead of b, a, c or other orders.



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