Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r27216887
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -540,6 +563,26 @@ private[spark] class Client(
amContainer
}
+ def setupCredentials(): Unit = {
+ if (args.principal != null) {
+ require(args.keytab != null, "Keytab must be specified when
principal is specified.")
+ logInfo("Attempting to login to the Kerberos" +
+ s" using principal: ${args.principal} and keytab: ${args.keytab}")
+ val f = new File(args.keytab)
+ // Generate a file name that can be used for the keytab file, that
does not conflict
+ // with any user file.
+ val keytabFileName = f.getName + "-" + UUID.randomUUID().toString
+ val ugi =
UserGroupInformation.loginUserFromKeytabAndReturnUGI(args.principal,
args.keytab)
+ credentials = ugi.getCredentials
+ loginFromKeytab = true
+ sparkConf.set("spark.yarn.keytab", keytabFileName)
--- End diff --
Any reason we aren't supporting these configs set by the user? ie can use
the configs instead of the command line arguments.
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