Github user NarineK commented on a diff in the pull request:
https://github.com/apache/spark/pull/13760#discussion_r68298040
--- Diff: R/pkg/R/group.R ---
@@ -243,17 +236,73 @@ setMethod("gapply",
signature(x = "GroupedData"),
function(x, func, schema) {
try(if (is.null(schema)) stop("schema cannot be NULL"))
--- End diff --
with or without try both work work fine.
Without try the error looks like:
Error in .local(x, ...) : schema cannot be NULL
with try:
Error in try(if (is.null(schema)) stop("schema cannot be NULL")) :
schema cannot be NULL
Is there a convention in SparkR for showing an error message ?
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