Github user shivaram commented on a diff in the pull request:
https://github.com/apache/spark/pull/7139#discussion_r35937603
--- Diff: core/src/main/scala/org/apache/spark/api/r/RUtils.scala ---
@@ -62,4 +64,7 @@ private[spark] object RUtils {
}
}
}
+
+ /** Check if R is installed before running tests that use R commands. */
+ def isRInstalled: Boolean = Seq("R", "--version").! == 0
--- End diff --
One minor thing is that this might not work in Windows setups as I think R
is shipped as `R.exe` in that case. Any ideas if we actually run tests on
Windows as a part of our release process?
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