Github user sun-rui commented on a diff in the pull request:
https://github.com/apache/spark/pull/12836#discussion_r64869782
--- Diff: R/pkg/R/deserialize.R ---
@@ -197,6 +197,31 @@ readMultipleObjects <- function(inputCon) {
data # this is a list of named lists now
}
+readMultipleObjectsWithKeys <- function(inputCon) {
+ # readMultipleObjectsWithKeys will read multiple continuous objects from
+ # a DataOutputStream. There is no preceding field telling the count
+ # of the objects, so the number of objects varies, we try to read
+ # all objects in a loop until the end of the stream. The rows in
--- End diff --
comment:
Replace the statement "The rows in ..." with
"
This function is for use by gapply. Each group of rows is followed by the
grouping key for this group which is then followed by next group."
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