Github user shivaram commented on a diff in the pull request:
https://github.com/apache/spark/pull/14783#discussion_r77762250
--- Diff: R/pkg/R/utils.R ---
@@ -697,3 +697,18 @@ is_master_local <- function(master) {
is_sparkR_shell <- function() {
grepl(".*shell\\.R$", Sys.getenv("R_PROFILE_USER"), perl = TRUE)
}
+
+# rbind a list of rows with raw (binary) columns
+#
+# @param inputData a list of rows, with each row a list
+# @return data.frame with raw columns as lists
+rbindRaws <- function(inputData){
+ row1 <- inputData[[1]]
+ rawcolumns <- ("raw" == sapply(row1, class))
+
+ listmatrix <- do.call(rbind, inputData)
--- End diff --
I was looking at
https://stat.ethz.ch/R-manual/R-devel/library/base/html/cbind.html specifically
the section `Value` which says
```
The type of a matrix result determined from the highest type of any of the
inputs in the hierarchy raw < logical < integer < double < complex < character
< list .
```
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