Github user actuaryzhang commented on a diff in the pull request:
https://github.com/apache/spark/pull/17884#discussion_r115157036
--- Diff: R/pkg/vignettes/sparkr-vignettes.Rmd ---
@@ -405,7 +405,7 @@ result <- gapply(
head(arrange(result, "max_mpg", decreasing = TRUE))
```
-Like gapply, `gapplyCollect` applies a function to each partition of a
`SparkDataFrame` and collect the result back to R `data.frame`. The output of
the function should be a `data.frame` but no schema is required in this case.
Note that `gapplyCollect` can fail if the output of UDF run on all the
partition cannot be pulled to the driver and fit in driver memory.
+Like gapply, `gapplyCollect` applies a function to each partition of a
`SparkDataFrame` and collect the result back to R `data.frame`. The output of
the function should be a `data.frame` but no schema is required in this case.
Note that `gapplyCollect` can fail if the output of the UDF on all partitions
cannot be pulled into the driver's memory.
--- End diff --
Done.
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