Liang-Chi Hsieh created SPARK-17867:
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Summary: Dataset.dropDuplicates (i.e. distinct) should consider
the columns with same column name
Key: SPARK-17867
URL: https://issues.apache.org/jira/browse/SPARK-17867
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Liang-Chi Hsieh
We find and get the first resolved attribute from output with the given column
name in Dataset.dropDuplicates. When we have the more than one columns with the
same name. Other columns are put into aggregation columns, instead of grouping
columns. We should fix this.
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