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[SPARK-18903][SPARKR][BACKPORT-2.1] Add API to get SparkUI URL #16507

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[SPARK-18903][SPARKR][BACKPORT-2.1] Add API to get SparkUI URL #16507

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aecae96
uiWebUrl
felixcheung Dec 21, 2016
8655622
update since
felixcheung Jan 9, 2017
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1 change: 1 addition & 0 deletions R/pkg/NAMESPACE
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Expand Up @@ -16,6 +16,7 @@ export("sparkR.stop")
export("sparkR.session.stop")
export("sparkR.conf")
export("sparkR.version")
export("sparkR.uiWebUrl")
export("print.jobj")

export("sparkR.newJObject")
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24 changes: 24 additions & 0 deletions R/pkg/R/sparkR.R
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Expand Up @@ -410,6 +410,30 @@ sparkR.session <- function(
sparkSession
}

#' Get the URL of the SparkUI instance for the current active SparkSession
#'
#' Get the URL of the SparkUI instance for the current active SparkSession.
#'
#' @return the SparkUI URL, or NA if it is disabled, or not started.
#' @rdname sparkR.uiWebUrl
#' @name sparkR.uiWebUrl
#' @export
#' @examples
#'\dontrun{
#' sparkR.session()
#' url <- sparkR.uiWebUrl()
#' }
#' @note sparkR.uiWebUrl since 2.1.1
sparkR.uiWebUrl <- function() {
sc <- sparkR.callJMethod(getSparkContext(), "sc")
u <- callJMethod(sc, "uiWebUrl")
if (callJMethod(u, "isDefined")) {
callJMethod(u, "get")
} else {
NA
}
}

#' Assigns a group ID to all the jobs started by this thread until the group ID is set to a
#' different value or cleared.
#'
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5 changes: 4 additions & 1 deletion R/pkg/inst/tests/testthat/test_sparkSQL.R
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Expand Up @@ -2613,7 +2613,7 @@ test_that("randomSplit", {
expect_true(all(sapply(abs(counts / num - weights / sum(weights)), function(e) { e < 0.05 })))
})

test_that("Setting and getting config on SparkSession", {
test_that("Setting and getting config on SparkSession, sparkR.conf(), sparkR.uiWebUrl()", {
# first, set it to a random but known value
conf <- callJMethod(sparkSession, "conf")
property <- paste0("spark.testing.", as.character(runif(1)))
Expand All @@ -2637,6 +2637,9 @@ test_that("Setting and getting config on SparkSession", {
expect_equal(appNameValue, "sparkSession test")
expect_equal(testValue, value)
expect_error(sparkR.conf("completely.dummy"), "Config 'completely.dummy' is not set")

url <- sparkR.uiWebUrl()
expect_equal(substr(url, 1, 7), "http://")
})

test_that("enableHiveSupport on SparkSession", {
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