Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/15666#discussion_r105839398
--- Diff: R/pkg/R/context.R ---
@@ -319,6 +319,34 @@ spark.addFile <- function(path, recursive = FALSE) {
invisible(callJMethod(sc, "addFile",
suppressWarnings(normalizePath(path)), recursive))
}
+
+#' Adds a JAR dependency for all tasks to be executed on this SparkContext
in the future.
+#'
+#' The \code{path} passed can be either a local file, a file in HDFS (or
other Hadoop-supported
+#' filesystems), an HTTP, HTTPS or FTP URI, or local:/path for a file on
every worker node.
+#' If \code{addToCurrentClassLoader} is true, add the jar to the current
threads' classloader. In
+#' general adding to the current threads' class loader will impact all
other application threads
+#' unless they have explicitly changed their class loader.
+#'
+#' @rdname spark.addJar
+#' @param path The path of the jar to be added
+#' @param addToCurrentClassLoader Whether to add the jar to the current
driver classloader.
+#' Default is FALSE.
+#' @export
+#' @examples
+#'\dontrun{
+#' spark.addJar("/path/to/something.jar", TRUE)
+#'}
+#' @note spark.addJar since 2.2.0
+spark.addJar <- function(path, addToCurrentClassLoader = FALSE) {
+ sc <- getSparkContext()
+ normalizedPath <- suppressWarnings(normalizePath(path))
+ scala_sc <- callJMethod(sc, "sc")
+ invisible(callJMethod(scala_sc, "addJar", normalizedPath,
addToCurrentClassLoader))
--- End diff --
(`C:\projects\spark\R\lib\SparkR\tests\testthat\` was indeed printed
together in the logs..).
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