HeartSaVioR commented on a change in pull request #27191: [SPARK-30495][SS] 
Consider spark.security.credentials.kafka.enabled and cluster configuration 
when checking latest delegation token
URL: https://github.com/apache/spark/pull/27191#discussion_r366063215
 
 

 ##########
 File path: 
external/kafka-0-10-token-provider/src/main/scala/org/apache/spark/kafka010/KafkaTokenUtil.scala
 ##########
 @@ -293,11 +293,11 @@ private[spark] object KafkaTokenUtil extends Logging {
   def isConnectorUsingCurrentToken(
       params: ju.Map[String, Object],
       clusterConfig: Option[KafkaTokenClusterConf]): Boolean = {
-    if (params.containsKey(SaslConfigs.SASL_JAAS_CONFIG)) {
+    if 
(SparkEnv.get.conf.getBoolean("spark.security.credentials.kafka.enabled", true) 
&&
 
 Review comment:
   Is there a case where "spark.security.credentials.kafka.enabled" is set to 
false but "clusterConfig.isDefined" is set to true? I'm wondering whether we 
only check "clusterConfig.isDefined" and achieve the same thing.

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