Depois de derrubar o broker fui tentar inicializar ele novamente e está ocorrendo esse erro. Acredito que é esse o log do stack:
[2020-09-30 17:02:26,085] ERROR [KafkaServer id=0] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.lang.NumberFormatException: For input string: "00000000000000000000 2"
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.base/java.lang.Long.parseLong(Long.java:692)
at java.base/java.lang.Long.parseLong(Long.java:817)
at scala.collection.StringOps$.toLong$extension(StringOps.scala:902)
at kafka.log.Log$.offsetFromFileName(Log.scala:2566)
at kafka.log.Log$.offsetFromFile(Log.scala:2570)
at kafka.log.Log.$anonfun$loadSegmentFiles$3(Log.scala:606)
at scala.collection.ArrayOps$WithFilter.foreach(ArrayOps.scala:73)
at kafka.log.Log.loadSegmentFiles(Log.scala:603)
at kafka.log.Log.$anonfun$loadSegments$1(Log.scala:714)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
at kafka.log.Log.retryOnOffsetOverflow(Log.scala:2327)
at kafka.log.Log.loadSegments(Log.scala:708)
at kafka.log.Log.<init>(Log.scala:298)
at kafka.log.Log$.apply(Log.scala:2461)
at kafka.log.LogManager.loadLog(LogManager.scala:283)
at kafka.log.LogManager.$anonfun$loadLogs$12(LogManager.scala:353)
at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:65)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
[2020-09-30 17:02:26,088] INFO [KafkaServer id=0] shutting down (kafka.server.KafkaServer)
Valeu!!!