Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/17884#discussion_r115152482 --- 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 -- could you add backtick to gapply at the beginning
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