Github user harishreedharan commented on a diff in the pull request:
https://github.com/apache/spark/pull/7394#discussion_r34820166
--- Diff: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala ---
@@ -481,8 +481,14 @@ object SparkSubmit {
}
// Let YARN know it's a pyspark app, so it distributes needed
libraries.
- if (clusterManager == YARN && args.isPython) {
- sysProps.put("spark.yarn.isPython", "true")
+ if (clusterManager == YARN) {
+ if (args.isPython) {
+ sysProps.put("spark.yarn.isPython", "true")
+ }
+ if (args.principal != null) {
+ require(args.keytab != null, "Keytab must be specified when the
keytab is specified")
--- End diff --
Looks like `SparkSubmitArguments` actually takes care of this and the
initial login happens correctly even in the combination case (See
https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/SparkSubmitArguments.scala#L178
). Only the code in `Client.scala` needs to change to handle the combinations.
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