[GitHub] spark pull request #17818: [SPARK-20544][SPARKR] R wrapper for input_file_na...

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

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

    https://github.com/apache/spark/pull/17818#discussion_r114589815
  
    --- Diff: R/pkg/R/functions.R ---
    @@ -3974,3 +3974,24 @@ setMethod("grouping_id",
                 jc <- callJStatic("org.apache.spark.sql.functions", "grouping_id", jcols)
                 column(jc)
               })
    +
    +#' input_file_name
    +#'
    +#' Creates a string column with the input file name for a given row
    --- End diff --
    
    this actually makes a lot more sense...


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