Edoardo Comar created KAFKA-18758:
-------------------------------------

             Summary: NullPointerException in shutdown following 
InvalidConfigurationException
                 Key: KAFKA-18758
                 URL: https://issues.apache.org/jira/browse/KAFKA-18758
             Project: Kafka
          Issue Type: Bug
          Components: core
            Reporter: Edoardo Comar


A NullPointerException is thrown when the server is shutting down because of a 
conflict topic config setting
{color:#0000ff}log.cleaner.max.compaction.lag.ms{color}{color:#000000}=5000{color}
{color:#0000ff}log.cleaner.min.compaction.lag.ms{color}{color:#000000}=10000{color}
Shutdown should happen without NPE polluting the logs:
 
[2025-02-07 13:41:16,084] INFO [BrokerServer id=1] Transition from STARTING to 
STARTED (kafka.server.BrokerServer)
[2025-02-07 13:41:16,085] ERROR [BrokerServer id=1] Fatal error during broker 
startup. Prepare to shutdown (kafka.server.BrokerServer)
org.apache.kafka.common.errors.InvalidConfigurationException: conflict topic 
config setting min.compaction.lag.ms (10000) > max.compaction.lag.ms (5000)
[2025-02-07 13:41:16,089] INFO [BrokerServer id=1] Transition from STARTED to 
SHUTTING_DOWN (kafka.server.BrokerServer)
[2025-02-07 13:41:16,089] INFO [BrokerServer id=1] shutting down 
(kafka.server.BrokerServer)
[2025-02-07 13:41:16,090] ERROR [BrokerServer id=1] Fatal error during broker 
shutdown. (kafka.server.BrokerServer)
java.lang.NullPointerException: Cannot invoke 
"kafka.server.BrokerLifecycleManager.beginControlledShutdown()" because the 
return value of "kafka.server.BrokerServer.lifecycleManager()" is null
        at kafka.server.BrokerServer.shutdown(BrokerServer.scala:743) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.KafkaBroker.shutdown(KafkaBroker.scala:101) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.KafkaBroker.shutdown$(KafkaBroker.scala:101) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.BrokerServer.shutdown(BrokerServer.scala:74) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.BrokerServer.startup(BrokerServer.scala:608) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at 
kafka.server.KafkaRaftServer.$anonfun$startup$2(KafkaRaftServer.scala:96) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at 
kafka.server.KafkaRaftServer.$anonfun$startup$2$adapted(KafkaRaftServer.scala:96)
 ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at scala.Option.foreach(Option.scala:437) [scala-library-2.13.15.jar:?]
        at kafka.server.KafkaRaftServer.startup(KafkaRaftServer.scala:96) 
[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.Kafka$.main(Kafka.scala:97) [kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.Kafka.main(Kafka.scala) [kafka_2.13-4.1.0-SNAPSHOT.jar:?]
[2025-02-07 13:41:16,090] INFO [BrokerServer id=1] Transition from 
SHUTTING_DOWN to SHUTDOWN (kafka.server.BrokerServer)
[2025-02-07 13:41:16,091] ERROR Exiting Kafka due to fatal exception during 
startup. (kafka.Kafka$)
java.lang.NullPointerException: Cannot invoke 
"kafka.server.BrokerLifecycleManager.beginControlledShutdown()" because the 
return value of "kafka.server.BrokerServer.lifecycleManager()" is null
        at kafka.server.BrokerServer.shutdown(BrokerServer.scala:743) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.KafkaBroker.shutdown(KafkaBroker.scala:101) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.KafkaBroker.shutdown$(KafkaBroker.scala:101) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.BrokerServer.shutdown(BrokerServer.scala:74) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.server.BrokerServer.startup(BrokerServer.scala:608) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at 
kafka.server.KafkaRaftServer.$anonfun$startup$2(KafkaRaftServer.scala:96) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at 
kafka.server.KafkaRaftServer.$anonfun$startup$2$adapted(KafkaRaftServer.scala:96)
 ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at scala.Option.foreach(Option.scala:437) ~[scala-library-2.13.15.jar:?]
        at kafka.server.KafkaRaftServer.startup(KafkaRaftServer.scala:96) 
~[kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.Kafka$.main(Kafka.scala:97) [kafka_2.13-4.1.0-SNAPSHOT.jar:?]
        at kafka.Kafka.main(Kafka.scala) [kafka_2.13-4.1.0-SNAPSHOT.jar:?]
[2025-02-07 13:41:16,091] INFO [ControllerServer id=1] shutting down 
(kafka.server.ControllerServer)
[2025-02-07 13:41:16,092] INFO [raft-expiration-reaper]: Shutting down 
(org.apache.kafka.raft.TimingWheelExpirationService$ExpiredOperationReaper)
[2025-02-07 13:41:16,123] INFO [raft-expiration-reaper]: Shutdown completed 
(org.apache.kafka.raft.TimingWheelExpirationService$ExpiredOperationReaper)
[2025-02-07 13:41:16,123] INFO [raft-expiration-reaper]: Stopped 
(org.apache.kafka.raft.TimingWheelExpirationService$ExpiredOperationReaper)
[2025-02-07 13:41:16,124] INFO [kafka-1-raft-io-thread]: Shutting down 
(org.apache.kafka.raft.KafkaRaftClientDriver)
 



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