[GitHub] [spark] HyukjinKwon commented on a change in pull request #27877: [SPARK-30541][TESTS] Implement KafkaDelegationTokenSuite with testRetry

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HyukjinKwon commented on a change in pull request #27877: [SPARK-30541][TESTS] Implement KafkaDelegationTokenSuite with testRetry
URL: https://github.com/apache/spark/pull/27877#discussion_r395604822
 
 

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 File path: external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaTestUtils.scala
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 @@ -74,6 +74,7 @@ class KafkaTestUtils(
   logInfo(s"Local host name is $localCanonicalHostName")
 
   private var kdc: MiniKdc = _
+  private var kdcDataDir: File = _
 
 Review comment:
   Hm, quick question. Is this related to the fix? I couldn't follow why we need to have this var.

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