[GitHub] spark pull request #17159: [SPARK-19818][SparkR] rbind should check for name...

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

Github user felixcheung commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17159#discussion_r104329881
  
    --- Diff: R/pkg/R/DataFrame.R ---
    @@ -2685,7 +2686,8 @@ setMethod("unionAll",
     
     #' Union two or more SparkDataFrames
     #'
    -#' Union two or more SparkDataFrames. This is equivalent to \code{UNION ALL} in SQL.
    +#' Union two or more SparkDataFrames by row. In constrast to \link{union}, this method
    +#' requires that the input SparkDataFrames have the same column names.
    --- End diff --
    
    I'd just say, `as in R's rbind, this method requires...`
    btw, should we care about data type matching - does R's rbind check?


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