Github user gaborgsomogyi commented on a diff in the pull request: https://github.com/apache/spark/pull/22598#discussion_r230683713 --- Diff: core/src/main/scala/org/apache/spark/deploy/security/HadoopDelegationTokenManager.scala --- @@ -66,7 +66,8 @@ private[spark] class HadoopDelegationTokenManager( private def getDelegationTokenProviders: Map[String, HadoopDelegationTokenProvider] = { val providers = Seq(new HadoopFSDelegationTokenProvider(fileSystems)) ++ safeCreateProvider(new HiveDelegationTokenProvider) ++ - safeCreateProvider(new HBaseDelegationTokenProvider) + safeCreateProvider(new HBaseDelegationTokenProvider) ++ + safeCreateProvider(new KafkaDelegationTokenProvider) --- End diff -- We've considered turning off by default and came to the conclusion what Marcelo described which I think still stands. The PR says documentation is not covered because design can change. My plan is to add it in a separate PR when the feature merged. Related what to document I think kafka integration guide should cover all the things. There it's already covered that the jar should be on the path.
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