Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/17640#discussion_r113853971
--- Diff: R/pkg/R/serialize.R ---
@@ -83,6 +83,7 @@ writeObject <- function(con, object, writeType = TRUE) {
Date = writeDate(con, object),
POSIXlt = writeTime(con, object),
POSIXct = writeTime(con, object),
+ bigint = writeDouble(con, object),
--- End diff --
I think this is different though, for PRIMITIVE_TYPES, it is used when you
create a schema with structField in R. In this case you can definitely define a
column as bigint and then pass a R numeric value to it
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