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https://issues.apache.org/jira/browse/SPARK-16041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li updated SPARK-16041:
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Summary: Disallow Duplicate Columns in `partitionBy`, `blockBy` and
`sortBy` in DataFrameWriter (was: Disallow Duplicate Columns in `partitionBy`,
`blockBy` and `sortBy` )
> Disallow Duplicate Columns in `partitionBy`, `blockBy` and `sortBy` in
> DataFrameWriter
> --------------------------------------------------------------------------------------
>
> 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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