Github user zsxwing commented on a diff in the pull request:

    https://github.com/apache/spark/pull/16686#discussion_r98746146
  
    --- Diff: 
external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaTestUtils.scala
 ---
    @@ -249,6 +249,24 @@ class KafkaTestUtils extends Logging {
         offsets
       }
     
    +  def cleanupLogs(): Unit = {
    +    server.logManager.cleanupLogs()
    +  }
    +
    +  def getEarliestOffsets(topics: Set[String]): Map[TopicPartition, Long] = 
{
    +    val kc = new KafkaConsumer[String, String](consumerConfiguration)
    +    logInfo("Created consumer to get latest offsets")
    +    kc.subscribe(topics.asJavaCollection)
    +    kc.poll(0)
    +    val partitions = kc.assignment()
    +    kc.pause(partitions)
    +    kc.seekToBeginning(partitions)
    +    val offsets = partitions.asScala.map(p => p -> kc.position(p)).toMap
    +    kc.close()
    +    logInfo("Closed consumer to get latest offsets")
    --- End diff --
    
    nit: please fix the log


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