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Posted to issues@spark.apache.org by "Xiao Li (JIRA)" <ji...@apache.org> on 2016/06/18 05:19:05 UTC

[jira] [Created] (SPARK-16041) Disallow Duplicate Columns in `partitionBy`, `blockBy` and `sortBy`

Xiao Li created SPARK-16041:
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             Summary: Disallow Duplicate Columns in `partitionBy`, `blockBy` and `sortBy` 
                 Key: SPARK-16041
                 URL: https://issues.apache.org/jira/browse/SPARK-16041
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Xiao Li


Duplicate columns are not allowed in `partitionBy`, `blockBy`, `sortBy`. The duplicate columns could cause unpredictable results. For example, the resolution failure. 

We should detect the duplicates and issue exceptions with appropriate messages.




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