Major Description
If a segment needs to be recovered (for example, because of a missing index file or uncompleted swap operation) and its base offset is less than the log start offset, the broker will crash with the following error:
Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.lang.IllegalArgumentException: inconsistent range
at java.util.concurrent.ConcurrentSkipListMap$SubMap.<init>(Unknown Source)
at java.util.concurrent.ConcurrentSkipListMap.subMap(Unknown Source)
at java.util.concurrent.ConcurrentSkipListMap.subMap(Unknown Source)
at kafka.log.Log$$anonfun$12.apply(Log.scala:1579)
at kafka.log.Log$$anonfun$12.apply(Log.scala:1578)
at scala.Option.map(Option.scala:146)
at kafka.log.Log.logSegments(Log.scala:1578)
at kafka.log.Log.kafka$log$Log$$recoverSegment(Log.scala:358)
at kafka.log.Log$$anonfun$completeSwapOperations$1.apply(Log.scala:389)
at kafka.log.Log$$anonfun$completeSwapOperations$1.apply(Log.scala:380)
at scala.collection.immutable.Set$Set1.foreach(Set.scala:94)
at kafka.log.Log.completeSwapOperations(Log.scala:380)
at kafka.log.Log.loadSegments(Log.scala:408)
at kafka.log.Log.<init>(Log.scala:216)
at kafka.log.Log$.apply(Log.scala:1765)
at kafka.log.LogManager.kafka$log$LogManager$$loadLog(LogManager.scala:260)
at kafka.log.LogManager$$anonfun$loadLogs$2$$anonfun$11$$anonfun$apply$15$$anonfun$apply$2.apply$mcV$sp(LogManager.scala:340)
at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:62)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Since these segments are outside the log range, we should delete them, or at least not block broker startup because of them.
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