Github user sun-rui commented on a diff in the pull request: https://github.com/apache/spark/pull/12493#discussion_r60672376 --- Diff: R/pkg/R/generics.R --- @@ -439,6 +439,10 @@ setGeneric("covar_samp", function(col1, col2) {standardGeneric("covar_samp") }) #' @export setGeneric("covar_pop", function(col1, col2) {standardGeneric("covar_pop") }) +#' @rdname dapply +#' @export +setGeneric("dapply", function(x, func, schema = NULL) { standardGeneric("dapply") }) --- End diff -- OK. I will support dapply with schema only in this PR. @shivaram, for your point 3, auto-schema detection does not work for dapply. As this happens in action (task execution phase), but schema should be aware at logical plan analyzing time.
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