Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7872#discussion_r36244694
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala ---
@@ -244,6 +253,47 @@ object YarnSparkHadoopUtil {
}
}
+ /**
+ * Escapes a string for inclusion in a command line executed by Yarn.
Yarn executes commands
+ * using a batch file (.cmd) Windows escaping is neccessary. The
+ * argument is enclosed in single quotes only if there are spaces inside
the string.
+ * Also some key characters are escaped that have a meaning in Windows.
+ *
+ * @param arg A single argument.
+ * @return Argument quoted for execution via Yarn's generated shell
script.
--- End diff --
nit: YARN
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