Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5031#discussion_r26702673
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -903,6 +908,30 @@ object Client extends Logging {
}
/**
+ * Obtains token for the Hive metastore and adds them to the credentials.
+ */
+ private def obtainTokenForHiveMetastore(conf: Configuration,
credentials: Credentials) {
+ if (UserGroupInformation.isSecurityEnabled /* And Hive is enabled */) {
--- End diff --
So, I think the `/* And Hive is enabled */` part is kinda important, and
not talking just about Hive being compiled in. What would happen if a user
doesn't have any Hive services running?
I'm also a little worried about precedent here... couldn't we make the same
argument for acquiring HBase tokens? Solr? Somthing else? Unfortunately, I
can't think of any alternative off the bat, given the way cluster mode works...
:-/
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