Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/21589#discussion_r201887249
--- Diff: R/pkg/R/context.R ---
@@ -435,3 +435,31 @@ setCheckpointDir <- function(directory) {
sc <- getSparkContext()
invisible(callJMethod(sc, "setCheckpointDir",
suppressWarnings(normalizePath(directory))))
}
+
+#' Total number of CPU cores of all executors registered in the cluster at
the moment.
--- End diff --
`The number reflects current status of the cluster and can change in the
future.` this info looks missing here
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