[jira] [Created] (KAFKA-7532) Missing stringification in error message "Removed ArrayBuffer() from list of shutting down brokers. (kafka.controller.KafkaController)"

["Andreas Kohn (JIRA)" <ji...@apache.org>]

Andreas Kohn created KAFKA-7532:
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             Summary: Missing stringification in error message "Removed ArrayBuffer() from list of shutting down brokers. (kafka.controller.KafkaController)"
                 Key: KAFKA-7532
                 URL: https://issues.apache.org/jira/browse/KAFKA-7532
             Project: Kafka
          Issue Type: Bug
          Components: controller
    Affects Versions: 2.0.0
            Reporter: Andreas Kohn


Messages I saw in my logs:
{noformat}
[2018-10-23 12:19:59,975] INFO [RequestSendThread controllerId=0] Shutting down (kafka.controller.RequestSendThread)
[2018-10-23 12:19:59,975] INFO [RequestSendThread controllerId=0] Stopped (kafka.controller.RequestSendThread)
[2018-10-23 12:19:59,975] INFO [RequestSendThread controllerId=0] Shutdown completed (kafka.controller.RequestSendThread)
[2018-10-23 12:19:59,977] INFO [Controller id=0] Broker failure callback for 1 (kafka.controller.KafkaController)
[2018-10-23 12:19:59,977] INFO [Controller id=0] Removed ArrayBuffer() from list of shutting down brokers. (kafka.controller.KafkaController){noformat}

Looking at https://github.com/apache/kafka/blob/a947fe8da8646058335ff76b9a744462a3337a63/core/src/main/scala/kafka/controller/KafkaController.scala#L414 I'd guess there's a {{deadBrokers.mkString(",")}} missing, but my Scala-foo is too weak.



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