nealrichardson commented on code in PR #13183:
URL: https://github.com/apache/arrow/pull/13183#discussion_r875999848


##########
r/R/io.R:
##########
@@ -292,7 +292,7 @@ make_readable_file <- function(file, mmap = TRUE, 
compression = NULL, filesystem
   file
 }
 
-make_output_stream <- function(x, filesystem = NULL) {
+make_output_stream <- function(x, filesystem = NULL, compression = NULL) {

Review Comment:
   One thing to watch out here: sometimes people name their parquet files 
`something.parquet.snappy`, but you wouldn't use a CompressedOutputStream for 
that, you'd pass the compression option to the parquet writer itself. I would 
guess that the make_readable_file() path handles this already, maybe that can 
be a model (or maybe it doesn't and needs to).



##########
r/R/io.R:
##########
@@ -301,6 +301,7 @@ make_output_stream <- function(x, filesystem = NULL) {
     return(MakeRConnectionOutputStream(x))
   }
 
+

Review Comment:
   ```suggestion
   ```



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