Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/5096#discussion_r27765342
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMasterArguments.scala
---
@@ -92,6 +97,7 @@ class ApplicationMasterArguments(val args: Array[String])
{
| --jar JAR_PATH Path to your application's JAR file
| --class CLASS_NAME Name of your application's main class
| --primary-py-file A main Python file
+ | --primary-r-file A main R file
--- End diff --
IIUC if the user wants to run R then s/he shouldn't have python files.
Maybe we should validate only one of `primaryRFile` and `primaryPyFile` can be
set at a given time.
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