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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