Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21476#discussion_r192476723
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
---
@@ -1485,6 +1486,22 @@ private object Client extends Logging {
YarnAppReport(report.getYarnApplicationState(),
report.getFinalApplicationStatus(), diagsOpt)
}
+ /**
+ * Create a properly quoted library path string to be added as a prefix
to the command executed by
+ * YARN. This is different from plain quoting due to YARN executing the
command through "bash -c".
+ */
+ def createLibraryPathPrefix(libpath: String, conf: SparkConf): String = {
--- End diff --
This is so specific to the way YARN runs things that I don't think it would
be useful anywhere else. If at some point it becomes useful, the code can be
moved.
I think the tests I added are better than just unit testing this function,
since that way the code is actually being run through YARN and bash.
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