vanzin commented on a change in pull request #25760: [SPARK-29054][SS] 
Invalidate Kafka consumer when new delegation token available
URL: https://github.com/apache/spark/pull/25760#discussion_r324862132
 
 

 ##########
 File path: 
external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaDataConsumer.scala
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 @@ -46,6 +48,9 @@ private[kafka010] class InternalKafkaConsumer(
 
   val groupId = 
kafkaParams.get(ConsumerConfig.GROUP_ID_CONFIG).asInstanceOf[String]
 
+  // Kafka consumer is not able to give back the params instantiated with so 
we need to store it.
+  // It must be updated all the time when new consumer created.
 
 Review comment:
   ...must be updated whenever a new consumer is created.

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