Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r25525230
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -313,6 +320,21 @@ private[spark] class Client(
env("SPARK_YARN_MODE") = "true"
env("SPARK_YARN_STAGING_DIR") = stagingDir
env("SPARK_USER") =
UserGroupInformation.getCurrentUser().getShortUserName()
+ // If we logged in from keytab, make sure we copy the keytab to the
staging directory on
--- End diff --
this comment should probably be more like if we passed in a keytab. Whether
we used it to login or not before submitted is irrelevant.
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