[GitHub] spark issue #16794: [SPARK-19452][SparkR] Fix bug in the name assignment met...

[actuaryzhang <gi...@git.apache.org>]

Github user actuaryzhang commented on the issue:

    https://github.com/apache/spark/pull/16794
  
    An example illustrating the issue:
    
    ```
    df <- suppressWarnings(createDataFrame(iris))
    # this is error
    colnames(df) <- NULL
    # this should report error
    names(df) <- NULL
    ```
    
    @felixcheung @wangmiao1981 


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