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[SPARKR][SPARK-8452] expose jobGroup API in SparkR #6889

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[SPARKR][SPARK-8452] expose jobGroup API in SparkR #6889

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343ca77
Added setJobGroup, cancelJobGroup and clearJobGroup to SparkR
falaki Jun 18, 2015
a2c19af
taking spark context as first argument
falaki Jun 18, 2015
c706af9
Added examples
falaki Jun 19, 2015
9ce9f1e
Added basic tests to verify methods can be called and won't throw errors
falaki Jun 19, 2015
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5 changes: 5 additions & 0 deletions R/pkg/NAMESPACE
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Expand Up @@ -10,6 +10,11 @@ export("sparkR.init")
export("sparkR.stop")
export("print.jobj")

# Job group lifecycle management methods
export("setJobGroup",
"clearJobGroup",
"cancelJobGroup")

exportClasses("DataFrame")

exportMethods("arrange",
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29 changes: 29 additions & 0 deletions R/pkg/R/sparkR.R
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Expand Up @@ -278,3 +278,32 @@ sparkRHive.init <- function(jsc = NULL) {
assign(".sparkRHivesc", hiveCtx, envir = .sparkREnv)
hiveCtx
}

#' Assigns a group ID to all the jobs started by this thread until the group ID is set to a
#' different value or cleared.
#'
#' @param sc existing spark context
#' @param groupid the ID to be assigned to job groups
#' @param description description for the the job group ID
#' @param interruptOnCancel flag to indicate if the job is interrupted on job cancellation
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Yeah @davies point is a good one. We can add an example usage here with something like

 #' @examples
 #'\dontrun{
 #' sc <- sparkR.init()
 # setJobGroup(sc, "group", "some group", TRUE)
 #'}


setJobGroup <- function(sc, groupId, description, interruptOnCancel) {
callJMethod(sc, "setJobGroup", groupId, description, interruptOnCancel)
}

#' Clear current job group ID and its description
#'
#' @param sc existing spark context

clearJobGroup <- function(sc) {
callJMethod(sc, "clearJobGroup")
}

#' Cancel active jobs for the specified group
#'
#' @param sc existing spark context
#' @param groupId the ID of job group to be cancelled

cancelJobGroup <- function(sc, groupId) {
callJMethod(sc, "cancelJobGroup", groupId)
}