[ 
https://issues.apache.org/jira/browse/KAFKA-15071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Josep Prat updated KAFKA-15071:
-------------------------------
    Labels: flaky-test  (was: )

> Flaky test kafka.admin.LeaderElectionCommandTest.testPreferredReplicaElection 
> for Type=ZK, MetadataVersion=3.5-IV2, Security=PLAINTEXT
> --------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-15071
>                 URL: https://issues.apache.org/jira/browse/KAFKA-15071
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.5.0
>            Reporter: Josep Prat
>            Priority: Major
>              Labels: flaky-test
>
> Test became 
> kafka.admin.LeaderElectionCommandTest.testPreferredReplicaElection flaky 
> again but failing because of different reason. In this case it might be a 
> missing cleanup
> The values of the parameters are Type=ZK, MetadataVersion=3.5-IV2, 
> Security=PLAINTEXT
> Related to https://issues.apache.org/jira/browse/KAFKA-13737
> Ocurred: 
> https://ci-builds.apache.org/job/Kafka/job/kafka-pr/job/PR-13824/1/testReport/junit/kafka.admin/LeaderElectionCommandTest/Build___JDK_8_and_Scala_2_12____3__Type_ZK__Name_testPreferredReplicaElection__MetadataVersion_3_5_IV2__Security_PLAINTEXT/
> h3. Error Message
> {code:java}
> org.apache.kafka.common.errors.TopicExistsException: Topic 
> '__consumer_offsets' already exists.{code}
> h3. Stacktrace
> {code:java}
> org.apache.kafka.common.errors.TopicExistsException: Topic 
> '__consumer_offsets' already exists.{code}
> {{ }}
> h3. Standard Output
> {code:java}
> Successfully completed leader election (UNCLEAN) for partitions 
> unclean-topic-0 [2023-06-07 14:42:33,845] ERROR [QuorumController id=3000] 
> writeNoOpRecord: unable to start processing because of 
> RejectedExecutionException. Reason: The event queue is shutting down 
> (org.apache.kafka.controller.QuorumController:467) [2023-06-07 14:42:42,699] 
> WARN [AdminClient clientId=adminclient-65] Connection to node -2 
> (localhost/127.0.0.1:35103) could not be established. Broker may not be 
> available. (org.apache.kafka.clients.NetworkClient:814) Successfully 
> completed leader election (UNCLEAN) for partitions unclean-topic-0 
> [2023-06-07 14:42:44,416] ERROR [QuorumController id=0] writeNoOpRecord: 
> unable to start processing because of RejectedExecutionException. Reason: The 
> event queue is shutting down 
> (org.apache.kafka.controller.QuorumController:467) [2023-06-07 14:42:44,716] 
> WARN maxCnxns is not configured, using default value 0. 
> (org.apache.zookeeper.server.ServerCnxnFactory:309) [2023-06-07 14:42:44,765] 
> WARN No meta.properties file under dir 
> /tmp/kafka-2117748934951771120/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 14:42:44,986] WARN No 
> meta.properties file under dir /tmp/kafka-5133306871105583937/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 14:42:45,214] WARN No 
> meta.properties file under dir /tmp/kafka-8449809620400833553/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 14:42:45,634] WARN 
> [ReplicaFetcher replicaId=1, leaderId=2, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-0. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 14:42:45,634] WARN 
> [ReplicaFetcher replicaId=1, leaderId=0, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-4. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 14:42:45,872] WARN 
> [ReplicaFetcher replicaId=2, leaderId=0, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-1. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 14:42:46,010] WARN 
> [ReplicaFetcher replicaId=0, leaderId=2, fetcherId=0] Error in response for 
> fetch request (type=FetchRequest, replicaId=0, maxWait=500, minBytes=1, 
> maxBytes=10485760, 
> fetchData={__consumer_offsets-3=PartitionData(topicId=vAlEsYVbTFClcpnVRp3AOw, 
> fetchOffset=0, logStartOffset=0, maxBytes=1048576, 
> currentLeaderEpoch=Optional[0], lastFetchedEpoch=Optional.empty)}, 
> isolationLevel=READ_UNCOMMITTED, removed=, replaced=, 
> metadata=(sessionId=INVALID, epoch=INITIAL), rackId=) 
> (kafka.server.ReplicaFetcherThread:72) java.io.IOException: Connection to 2 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.server.BrokerBlockingSender.sendRequest(BrokerBlockingSender.scala:113) 
> at kafka.server.RemoteLeaderEndPoint.fetch(RemoteLeaderEndPoint.scala:79) at 
> kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:316)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3(AbstractFetcherThread.scala:130)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3$adapted(AbstractFetcherThread.scala:129)
>  at scala.Option.foreach(Option.scala:407) at 
> kafka.server.AbstractFetcherThread.maybeFetch(AbstractFetcherThread.scala:129)
>  at 
> kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:112) at 
> kafka.server.ReplicaFetcherThread.doWork(ReplicaFetcherThread.scala:98) at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,010] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=62, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='unclean-topic', 
> partitionIndex=0, controllerEpoch=1, leader=1, leaderEpoch=0, isr=[1, 2], 
> partitionEpoch=0, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=true, leaderRecoveryState=0)], 
> topicIds={unclean-topic=KnY8qAR8T4uk-GkDZS-l8w}, liveLeaders=(localhost:38923 
> (id: 1 rack: null))) to broker localhost:42679 (id: 2 rack: null). 
> Reconnecting to broker. (kafka.controller.RequestSendThread:72) 
> java.io.IOException: Connection to 2 was disconnected before the response was 
> read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,112] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,113] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,214] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,214] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,315] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,315] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,416] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,416] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,517] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,517] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,618] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,618] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,719] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,719] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,820] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,820] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:46,922] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:46,922] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,023] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,023] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,124] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,124] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,226] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,226] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,327] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,327] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,428] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,428] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,529] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,529] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,631] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,631] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,732] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,732] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,833] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:42679) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:47,833] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:42679 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:42679 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:47,883] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=62, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='unclean-topic', 
> partitionIndex=0, controllerEpoch=1, leader=1, leaderEpoch=0, isr=[1, 2], 
> partitionEpoch=0, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=true, leaderRecoveryState=0)], 
> topicIds={unclean-topic=KnY8qAR8T4uk-GkDZS-l8w}, liveLeaders=(localhost:38923 
> (id: 1 rack: null))) to broker localhost:42679 (id: 2 rack: null). 
> Reconnecting to broker. (kafka.controller.RequestSendThread:72) 
> java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:48,018] WARN [KafkaServer id=1] Proceeding to do an 
> unclean shutdown as all the controlled shutdown attempts failed 
> (kafka.server.KafkaServer:70) Successfully completed leader election 
> (UNCLEAN) for partitions __consumer_offsets-0, unclean-topic-0 [2023-06-07 
> 14:42:50,231] WARN [KafkaServer id=0] Proceeding to do an unclean shutdown as 
> all the controlled shutdown attempts failed (kafka.server.KafkaServer:70) 
> [2023-06-07 14:42:50,234] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type: UpdateMetadataRequest=, 
> controllerId=0, controllerEpoch=1, brokerEpoch=26, 
> partitionStates=[UpdateMetadataPartitionState(topicName='__consumer_offsets', 
> partitionIndex=1, controllerEpoch=1, leader=2, leaderEpoch=2, isr=[2], 
> zkVersion=3, replicas=[0, 2], offlineReplicas=[0]), 
> UpdateMetadataPartitionState(topicName='__consumer_offsets', 
> partitionIndex=3, controllerEpoch=1, leader=2, leaderEpoch=2, isr=[2], 
> zkVersion=3, replicas=[2, 0], offlineReplicas=[0])], 
> liveBrokers=UpdateMetadataBroker(id=2, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=46571, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null), 
> UpdateMetadataBroker(id=0, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=39965, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null)) to broker 
> localhost:39965 (id: 0 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 0 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,235] WARN [KafkaServer id=2] Error during controlled 
> shutdown, possibly because leader movement took longer than the configured 
> controller.socket.timeout.ms and/or request.timeout.ms: Connection to 0 was 
> disconnected before the response was read (kafka.server.KafkaServer:70) 
> [2023-06-07 14:42:50,234] WARN [ReplicaFetcher replicaId=2, leaderId=0, 
> fetcherId=0] Partition __consumer_offsets-1 marked as failed 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 14:42:50,237] WARN 
> [ReplicaFetcher replicaId=2, leaderId=0, fetcherId=0] Partition 
> __consumer_offsets-3 marked as failed (kafka.server.ReplicaFetcherThread:70) 
> [2023-06-07 14:42:50,238] WARN [ReplicaFetcher replicaId=2, leaderId=0, 
> fetcherId=0] Error in response for fetch request (type=FetchRequest, 
> replicaId=2, maxWait=500, minBytes=1, maxBytes=10485760, fetchData={}, 
> isolationLevel=READ_UNCOMMITTED, 
> removed=vAlEsYVbTFClcpnVRp3AOw:__consumer_offsets-1, 
> vAlEsYVbTFClcpnVRp3AOw:__consumer_offsets-3, replaced=, 
> metadata=(sessionId=1379156303, epoch=1), rackId=) 
> (kafka.server.ReplicaFetcherThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.server.BrokerBlockingSender.sendRequest(BrokerBlockingSender.scala:108) 
> at kafka.server.RemoteLeaderEndPoint.fetch(RemoteLeaderEndPoint.scala:79) at 
> kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:316)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3(AbstractFetcherThread.scala:130)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3$adapted(AbstractFetcherThread.scala:129)
>  at scala.Option.foreach(Option.scala:407) at 
> kafka.server.AbstractFetcherThread.maybeFetch(AbstractFetcherThread.scala:129)
>  at 
> kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:112) at 
> kafka.server.ReplicaFetcherThread.doWork(ReplicaFetcherThread.scala:98) at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,240] WARN [KafkaServer id=2] Proceeding to do an 
> unclean shutdown as all the controlled shutdown attempts failed 
> (kafka.server.KafkaServer:70) [2023-06-07 14:42:50,242] WARN 
> [RequestSendThread controllerId=0] Controller 0 epoch 1 fails to send request 
> (type=LeaderAndIsRequest, controllerId=0, controllerEpoch=1, brokerEpoch=109, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='unclean-topic', 
> partitionIndex=0, controllerEpoch=1, leader=2, leaderEpoch=3, isr=[2], 
> partitionEpoch=3, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=1), 
> LeaderAndIsrPartitionState(topicName='__consumer_offsets', partitionIndex=0, 
> controllerEpoch=1, leader=2, leaderEpoch=3, isr=[2], partitionEpoch=3, 
> replicas=[2, 1], addingReplicas=[], removingReplicas=[], isNew=false, 
> leaderRecoveryState=1)], topicIds={unclean-topic=KnY8qAR8T4uk-GkDZS-l8w, 
> __consumer_offsets=vAlEsYVbTFClcpnVRp3AOw}, liveLeaders=(localhost:46571 (id: 
> 2 rack: null))) to broker localhost:46571 (id: 2 rack: null). Reconnecting to 
> broker. (kafka.controller.RequestSendThread:72) java.io.IOException: 
> Connection to 2 was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,336] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,337] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,343] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,344] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,438] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,438] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,445] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,445] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,540] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,540] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,546] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,546] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,642] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,642] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,647] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,647] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,743] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,743] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,748] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,748] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,845] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,845] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,849] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,850] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,946] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,947] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:50,951] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:50,951] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,048] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,048] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,052] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,052] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,149] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,149] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,153] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,153] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,251] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,251] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,254] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,254] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,352] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,353] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,355] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,355] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,454] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,454] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,456] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,457] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,555] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,556] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,558] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,558] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,657] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,657] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:39965 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:39965 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,659] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46571) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,659] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46571 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46571 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:42:51,759] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:39965) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:42:51,759] WARN [RequestSendThread controllerId=0] Controller 
> 0's ...[truncated 309404 chars]... lManager.scala:296) at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,255] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,255] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,270] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,270] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,355] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,356] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,370] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,370] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,456] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,457] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,471] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,471] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,557] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,558] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,572] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,572] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,659] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,659] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,673] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,673] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,760] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,760] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,774] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,774] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,861] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,861] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,875] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:37897) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,875] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37897 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37897 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,890] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=110, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='unclean-topic', 
> partitionIndex=0, controllerEpoch=1, leader=2, leaderEpoch=3, isr=[2], 
> partitionEpoch=3, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=1)], 
> topicIds={unclean-topic=l44oy-3XQQG8VIambYEjbQ}, liveLeaders=(localhost:46749 
> (id: 2 rack: null))) to broker localhost:46749 (id: 2 rack: null). 
> Reconnecting to broker. (kafka.controller.RequestSendThread:72) 
> java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,892] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=26, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='__consumer_offsets', 
> partitionIndex=1, controllerEpoch=1, leader=0, leaderEpoch=2, isr=[0], 
> partitionEpoch=3, replicas=[2, 0], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=0)], 
> topicIds={__consumer_offsets=Z7eXcfnaS06bBpvabr6NNw}, 
> liveLeaders=(localhost:37897 (id: 0 rack: null))) to broker localhost:37897 
> (id: 0 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,913] WARN [Controller id=2, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:46749) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 14:44:53,914] WARN [RequestSendThread controllerId=2] Controller 
> 2's connection to broker localhost:46749 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:46749 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 14:44:53,947] WARN [RequestSendThread controllerId=2] Controller 
> 2 epoch 2 fails to send request (type: UpdateMetadataRequest=, 
> controllerId=2, controllerEpoch=2, brokerEpoch=110, partitionStates=[], 
> liveBrokers=UpdateMetadataBroker(id=2, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=46749, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null)) to broker 
> localhost:46749 (id: 2 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  Successfully completed leader election (PREFERRED) for partitions 
> preferred-topic-0 [2023-06-07 16:34:52,184] ERROR [QuorumController id=3000] 
> writeNoOpRecord: unable to start processing because of 
> RejectedExecutionException. Reason: The event queue is shutting down 
> (org.apache.kafka.controller.QuorumController:467) Successfully completed 
> leader election (PREFERRED) for partitions preferred-topic-0 [2023-06-07 
> 16:34:57,402] ERROR [QuorumController id=0] writeNoOpRecord: unable to start 
> processing because of RejectedExecutionException. Reason: The event queue is 
> shutting down (org.apache.kafka.controller.QuorumController:467) [2023-06-07 
> 16:34:57,816] WARN maxCnxns is not configured, using default value 0. 
> (org.apache.zookeeper.server.ServerCnxnFactory:309) [2023-06-07 16:34:58,192] 
> WARN No meta.properties file under dir 
> /tmp/kafka-3825474106858693552/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 16:34:58,563] WARN No 
> meta.properties file under dir /tmp/kafka-3325525689897519891/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 16:34:58,736] WARN No 
> meta.properties file under dir /tmp/kafka-1389897181500766185/meta.properties 
> (kafka.server.BrokerMetadataCheckpoint:70) [2023-06-07 16:34:59,590] WARN 
> [ReplicaFetcher replicaId=1, leaderId=0, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-1. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 16:34:59,591] WARN 
> [ReplicaFetcher replicaId=1, leaderId=2, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-3. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 16:34:59,694] WARN 
> [ReplicaFetcher replicaId=0, leaderId=2, fetcherId=0] Received 
> UNKNOWN_TOPIC_ID from the leader for partition __consumer_offsets-0. This 
> error may be returned transiently when the partition is being created or 
> deleted, but it is not expected to persist. 
> (kafka.server.ReplicaFetcherThread:70) [2023-06-07 16:34:59,919] WARN 
> [RequestSendThread controllerId=0] Controller 0 epoch 1 fails to send request 
> (type=LeaderAndIsRequest, controllerId=0, controllerEpoch=1, brokerEpoch=45, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='preferred-topic', 
> partitionIndex=0, controllerEpoch=1, leader=1, leaderEpoch=0, isr=[1, 2], 
> partitionEpoch=0, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=true, leaderRecoveryState=0)], 
> topicIds={preferred-topic=uQFB7kaqSVa-ENEtCww_KA}, 
> liveLeaders=(localhost:37895 (id: 1 rack: null))) to broker localhost:37895 
> (id: 1 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 1 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:34:59,919] WARN [ReplicaFetcher replicaId=2, leaderId=1, 
> fetcherId=0] Error in response for fetch request (type=FetchRequest, 
> replicaId=2, maxWait=500, minBytes=1, maxBytes=10485760, 
> fetchData={__consumer_offsets-2=PartitionData(topicId=ULntyBEjQPGcw04bkvFNKw, 
> fetchOffset=0, logStartOffset=0, maxBytes=1048576, 
> currentLeaderEpoch=Optional[0], lastFetchedEpoch=Optional.empty)}, 
> isolationLevel=READ_UNCOMMITTED, removed=, replaced=, 
> metadata=(sessionId=INVALID, epoch=INITIAL), rackId=) 
> (kafka.server.ReplicaFetcherThread:72) java.io.IOException: Connection to 1 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.server.BrokerBlockingSender.sendRequest(BrokerBlockingSender.scala:113) 
> at kafka.server.RemoteLeaderEndPoint.fetch(RemoteLeaderEndPoint.scala:79) at 
> kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:316)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3(AbstractFetcherThread.scala:130)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3$adapted(AbstractFetcherThread.scala:129)
>  at scala.Option.foreach(Option.scala:407) at 
> kafka.server.AbstractFetcherThread.maybeFetch(AbstractFetcherThread.scala:129)
>  at 
> kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:112) at 
> kafka.server.ReplicaFetcherThread.doWork(ReplicaFetcherThread.scala:98) at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,061] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:37895) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:00,064] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37895 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37895 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,166] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:37895) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:00,167] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37895 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37895 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,269] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:37895) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:00,270] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:37895 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:37895 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,290] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=45, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='preferred-topic', 
> partitionIndex=0, controllerEpoch=1, leader=1, leaderEpoch=0, isr=[1, 2], 
> partitionEpoch=0, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=true, leaderRecoveryState=0)], 
> topicIds={preferred-topic=uQFB7kaqSVa-ENEtCww_KA}, 
> liveLeaders=(localhost:37895 (id: 1 rack: null))) to broker localhost:37895 
> (id: 1 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  Successfully completed leader election (PREFERRED) for partitions 
> preferred-topic-0, __consumer_offsets-2 [2023-06-07 16:35:00,967] WARN 
> [ReplicaFetcher replicaId=1, leaderId=0, fetcherId=0] Partition 
> __consumer_offsets-1 marked as failed (kafka.server.ReplicaFetcherThread:70) 
> [2023-06-07 16:35:00,975] WARN [KafkaServer id=2] Error during controlled 
> shutdown, possibly because leader movement took longer than the configured 
> controller.socket.timeout.ms and/or request.timeout.ms: Connection to 0 was 
> disconnected before the response was read (kafka.server.KafkaServer:70) 
> [2023-06-07 16:35:00,975] WARN [KafkaServer id=1] Error during controlled 
> shutdown, possibly because leader movement took longer than the configured 
> controller.socket.timeout.ms and/or request.timeout.ms: Connection to 0 was 
> disconnected before the response was read (kafka.server.KafkaServer:70) 
> [2023-06-07 16:35:00,977] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=StopReplicaRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=26, deletePartitions=false, 
> topicStates=StopReplicaTopicState(topicName='__consumer_offsets', 
> partitionStates=[StopReplicaPartitionState(partitionIndex=0, leaderEpoch=0, 
> deletePartition=false)])) to broker localhost:41409 (id: 0 rack: null). 
> Reconnecting to broker. (kafka.controller.RequestSendThread:72) 
> java.io.IOException: Connection to 0 was disconnected before the response was 
> read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,984] WARN [KafkaServer id=2] Proceeding to do an 
> unclean shutdown as all the controlled shutdown attempts failed 
> (kafka.server.KafkaServer:70) [2023-06-07 16:35:00,984] WARN [KafkaServer 
> id=1] Proceeding to do an unclean shutdown as all the controlled shutdown 
> attempts failed (kafka.server.KafkaServer:70) [2023-06-07 16:35:00,989] WARN 
> [RequestSendThread controllerId=0] Controller 0 epoch 1 fails to send request 
> (type=LeaderAndIsRequest, controllerId=0, controllerEpoch=1, brokerEpoch=62, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='__consumer_offsets', 
> partitionIndex=4, controllerEpoch=1, leader=2, leaderEpoch=1, isr=[2], 
> partitionEpoch=1, replicas=[0, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=0)], 
> topicIds={__consumer_offsets=ULntyBEjQPGcw04bkvFNKw}, 
> liveLeaders=(localhost:44029 (id: 2 rack: null))) to broker localhost:44029 
> (id: 2 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 2 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,989] WARN [ReplicaFetcher replicaId=1, leaderId=2, 
> fetcherId=0] Error in response for fetch request (type=FetchRequest, 
> replicaId=1, maxWait=500, minBytes=1, maxBytes=10485760, fetchData={}, 
> isolationLevel=READ_UNCOMMITTED, 
> removed=ULntyBEjQPGcw04bkvFNKw:__consumer_offsets-2, 
> uQFB7kaqSVa-ENEtCww_KA:preferred-topic-0, replaced=, 
> metadata=(sessionId=1196487040, epoch=1), rackId=) 
> (kafka.server.ReplicaFetcherThread:72) java.io.IOException: Connection to 2 
> was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.server.BrokerBlockingSender.sendRequest(BrokerBlockingSender.scala:113) 
> at kafka.server.RemoteLeaderEndPoint.fetch(RemoteLeaderEndPoint.scala:79) at 
> kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:316)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3(AbstractFetcherThread.scala:130)
>  at 
> kafka.server.AbstractFetcherThread.$anonfun$maybeFetch$3$adapted(AbstractFetcherThread.scala:129)
>  at scala.Option.foreach(Option.scala:407) at 
> kafka.server.AbstractFetcherThread.maybeFetch(AbstractFetcherThread.scala:129)
>  at 
> kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:112) at 
> kafka.server.ReplicaFetcherThread.doWork(ReplicaFetcherThread.scala:98) at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:00,989] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=104, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='__consumer_offsets', 
> partitionIndex=2, controllerEpoch=1, leader=1, leaderEpoch=2, isr=[2, 1], 
> partitionEpoch=3, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=0), 
> LeaderAndIsrPartitionState(topicName='preferred-topic', partitionIndex=0, 
> controllerEpoch=1, leader=1, leaderEpoch=2, isr=[2, 1], partitionEpoch=3, 
> replicas=[1, 2], addingReplicas=[], removingReplicas=[], isNew=false, 
> leaderRecoveryState=0)], topicIds={__consumer_offsets=ULntyBEjQPGcw04bkvFNKw, 
> preferred-topic=uQFB7kaqSVa-ENEtCww_KA}, liveLeaders=(localhost:45987 (id: 1 
> rack: null))) to broker localhost:45987 (id: 1 rack: null). Reconnecting to 
> broker. (kafka.controller.RequestSendThread:72) java.io.IOException: 
> Connection to 1 was disconnected before the response was read at 
> org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:99)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:256) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,081] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:41409) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,082] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:41409 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:41409 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,090] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,091] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,093] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:45987) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,093] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:45987 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:45987 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,184] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:41409) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,184] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:41409 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:41409 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,193] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,193] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,194] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:45987) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,195] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:45987 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:45987 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,286] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:41409) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,286] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:41409 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:41409 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,295] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,295] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,296] WARN [Controller id=0, targetBrokerId=1] 
> Connection to node 1 (localhost/127.0.0.1:45987) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,297] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:45987 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:45987 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,388] WARN [Controller id=0, targetBrokerId=0] 
> Connection to node 0 (localhost/127.0.0.1:41409) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,388] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:41409 (id: 0 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:41409 (id: 0 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,397] WARN [Controller id=0, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,398] WARN [Controller id=0, targetBrokerId=1] Connection 
> to node 1 (localhost/127.0.0.1:45987) could not be established. Broker may 
> not be available. (org.apache.kafka.clients.NetworkClient:814) [2023-06-07 
> 16:35:01,398] WARN [RequestSendThread controllerId=0] Controller 0's 
> connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,398] WARN [RequestSendThread controllerId=0] Controller 
> 0's connection to broker localhost:45987 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:45987 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,429] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=62, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='__consumer_offsets', 
> partitionIndex=4, controllerEpoch=1, leader=2, leaderEpoch=1, isr=[2], 
> partitionEpoch=1, replicas=[0, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=0)], 
> topicIds={__consumer_offsets=ULntyBEjQPGcw04bkvFNKw}, 
> liveLeaders=(localhost:44029 (id: 2 rack: null))) to broker localhost:44029 
> (id: 2 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,432] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=LeaderAndIsRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=104, 
> partitionStates=[LeaderAndIsrPartitionState(topicName='__consumer_offsets', 
> partitionIndex=2, controllerEpoch=1, leader=1, leaderEpoch=2, isr=[2, 1], 
> partitionEpoch=3, replicas=[1, 2], addingReplicas=[], removingReplicas=[], 
> isNew=false, leaderRecoveryState=0), 
> LeaderAndIsrPartitionState(topicName='preferred-topic', partitionIndex=0, 
> controllerEpoch=1, leader=1, leaderEpoch=2, isr=[2, 1], partitionEpoch=3, 
> replicas=[1, 2], addingReplicas=[], removingReplicas=[], isNew=false, 
> leaderRecoveryState=0)], topicIds={__consumer_offsets=ULntyBEjQPGcw04bkvFNKw, 
> preferred-topic=uQFB7kaqSVa-ENEtCww_KA}, liveLeaders=(localhost:45987 (id: 1 
> rack: null))) to broker localhost:45987 (id: 1 rack: null). Reconnecting to 
> broker. (kafka.controller.RequestSendThread:72) 
> java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,433] WARN [RequestSendThread controllerId=0] Controller 
> 0 epoch 1 fails to send request (type=StopReplicaRequest, controllerId=0, 
> controllerEpoch=1, brokerEpoch=26, deletePartitions=false, 
> topicStates=StopReplicaTopicState(topicName='__consumer_offsets', 
> partitionStates=[StopReplicaPartitionState(partitionIndex=0, leaderEpoch=0, 
> deletePartition=false)])) to broker localhost:41409 (id: 0 rack: null). 
> Reconnecting to broker. (kafka.controller.RequestSendThread:72) 
> java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,469] WARN [Controller id=2, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,470] WARN [Controller id=2, targetBrokerId=1] Connection 
> to node 1 (localhost/127.0.0.1:45987) could not be established. Broker may 
> not be available. (org.apache.kafka.clients.NetworkClient:814) [2023-06-07 
> 16:35:01,471] WARN [RequestSendThread controllerId=2] Controller 2's 
> connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,472] WARN [RequestSendThread controllerId=2] Controller 
> 2's connection to broker localhost:45987 (id: 1 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:45987 (id: 1 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,539] WARN [RequestSendThread controllerId=2] Controller 
> 2 epoch 2 fails to send request (type: UpdateMetadataRequest=, 
> controllerId=2, controllerEpoch=2, brokerEpoch=104, partitionStates=[], 
> liveBrokers=UpdateMetadataBroker(id=2, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=44029, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null), 
> UpdateMetadataBroker(id=1, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=45987, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null)) to broker 
> localhost:45987 (id: 1 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,573] WARN [Controller id=2, targetBrokerId=2] 
> Connection to node 2 (localhost/127.0.0.1:44029) could not be established. 
> Broker may not be available. (org.apache.kafka.clients.NetworkClient:814) 
> [2023-06-07 16:35:01,574] WARN [RequestSendThread controllerId=2] Controller 
> 2's connection to broker localhost:44029 (id: 2 rack: null) was unsuccessful 
> (kafka.controller.RequestSendThread:72) java.io.IOException: Connection to 
> localhost:44029 (id: 2 rack: null) failed. at 
> org.apache.kafka.clients.NetworkClientUtils.awaitReady(NetworkClientUtils.java:70)
>  at 
> kafka.controller.RequestSendThread.brokerReady(ControllerChannelManager.scala:296)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:249) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127)
>  [2023-06-07 16:35:01,594] WARN [RequestSendThread controllerId=2] Controller 
> 2 epoch 2 fails to send request (type: UpdateMetadataRequest=, 
> controllerId=2, controllerEpoch=2, brokerEpoch=62, partitionStates=[], 
> liveBrokers=UpdateMetadataBroker(id=2, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=44029, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null), 
> UpdateMetadataBroker(id=1, v0Host='', v0Port=0, 
> endpoints=[UpdateMetadataEndpoint(port=45987, host='localhost', 
> listener='PLAINTEXT', securityProtocol=0)], rack=null)) to broker 
> localhost:44029 (id: 2 rack: null). Reconnecting to broker. 
> (kafka.controller.RequestSendThread:72) java.lang.InterruptedException at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
>  at 
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
>  at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277) at 
> org.apache.kafka.server.util.ShutdownableThread.pause(ShutdownableThread.java:113)
>  at 
> kafka.controller.RequestSendThread.backoff$1(ControllerChannelManager.scala:237)
>  at 
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:251) 
> at 
> org.apache.kafka.server.util.ShutdownableThread.run(ShutdownableThread.java:127){code}



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