vanzin commented on a change in pull request #23922:
[SPARK-25689][FOLLOW-UP][CORE] Get proxy user's delegation tokens
URL: https://github.com/apache/spark/pull/23922#discussion_r261343218
##########
File path:
core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
##########
@@ -404,7 +405,7 @@ class CoarseGrainedSchedulerBackend(scheduler:
TaskSchedulerImpl, val rpcEnv: Rp
val ugi = UserGroupInformation.getCurrentUser()
val tokens = if (dtm.renewalEnabled) {
dtm.start()
- } else if (ugi.hasKerberosCredentials()) {
+ } else if (ugi.hasKerberosCredentials() || ugi.getAuthenticationMethod
== PROXY) {
Review comment:
Use `SparkHadoopUtil.get.isProxyUser`.
I think I need to test this, though. `dtm.obtainDelegationTokens(creds)`
will probably fail if you are running as proxy user but does not have access to
the real UGI - e.g. submitting an app in cluster mode using a proxy user.
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