{"action":"opened","number":9179,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/9179","id":48187101,"html_url":"https://github.com/apache/spark/pull/9179","diff_url":"https://github.com/apache/spark/pull/9179.diff","patch_url":"https://github.com/apache/spark/pull/9179.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/9179","number":9179,"state":"open","locked":false,"title":"[SPARK-10971][SPARKR] RRunner should allow setting path to Rscript.","user":{"login":"sun-rui","id":2528327,"avatar_url":"https://avatars.githubusercontent.com/u/2528327?v=3","gravatar_id":"","url":"https://api.github.com/users/sun-rui","html_url":"https://github.com/sun-rui","followers_url":"https://api.github.com/users/sun-rui/followers","following_url":"https://api.github.com/users/sun-rui/following{/other_user}","gists_url":"https://api.github.com/users/sun-rui/gists{/gist_id}","starred_url":"https://api.github.com/users/sun-rui/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sun-rui/subscriptions","organizations_url":"https://api.github.com/users/sun-rui/orgs","repos_url":"https://api.github.com/users/sun-rui/repos","events_url":"https://api.github.com/users/sun-rui/events{/privacy}","received_events_url":"https://api.github.com/users/sun-rui/received_events","type":"User","site_admin":false},"body":"Add a new spark conf option \"spark.sparkr.r.driver.command\" to specify the executable for an R script in client modes.\r\n\r\nThe existing spark conf option \"spark.sparkr.r.command\" is used to specify the executable for an R script in cluster modes for both driver and workers. See also [launch R worker script](https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/api/r/RRDD.scala#L395).\r\n\r\nBTW, [envrionment variable \"SPARKR_DRIVER_R\"](https://github.com/apache/spark/blob/master/launcher/src/main/java/org/apache/spark/launcher/SparkSubmitCommandBuilder.java#L275) is used to locate R shell on the local host.\r\n\r\nFor your information, PYSPARK has two environment variables serving simliar purpose:\r\nPYSPARK_PYTHON\t      Python binary executable to use for PySpark in both driver and workers (default is `python`).\r\nPYSPARK_DRIVER_PYTHON\tPython binary executable to use for PySpark in driver only (default is PYSPARK_PYTHON).\r\npySpark use the code [here](https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/PythonRunner.scala#L41) to determine the python executable for a python 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