kafka connect 5.4 只有一个连接器，一个工人，并使用 connect-distributed。
下面是错误信息：
[2020-06-22 19:09:58,700] ERROR [Worker clientId=connect-1, groupId=test-cluster]
Uncaught exception in herder work thread, exiting: (org.apache.kafka.connect.runtime.distributed.DistributedHerder:290)
org.apache.kafka.connect.errors.ConnectException: Error while attempting to create/find topic(s) 'test-connect-offsets'
at org.apache.kafka.connect.util.TopicAdmin.createTopics(TopicAdmin.java:262)
at org.apache.kafka.connect.storage.KafkaOffsetBackingStore$1.run(KafkaOffsetBackingStore.java:99)
at org.apache.kafka.connect.util.KafkaBasedLog.start(KafkaBasedLog.java:128)
at org.apache.kafka.connect.storage.KafkaOffsetBackingStore.start(KafkaOffsetBackingStore.java:109)
at org.apache.kafka.connect.runtime.Worker.start(Worker.java:186)
at org.apache.kafka.connect.runtime.AbstractHerder.startServices(AbstractHerder.java:121)
at org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:277)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.InvalidReplicationFactorException: Replication factor: 3 larger than available brokers: 1.
at org.apache.kafka.common.internals.KafkaFutureImpl.wrapAndThrow(KafkaFutureImpl.java:45)
at org.apache.kafka.common.internals.KafkaFutureImpl.access$000(KafkaFutureImpl.java:32)
at org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(KafkaFutureImpl.java:89)
at org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:260)
at org.apache.kafka.connect.util.TopicAdmin.createTopics(TopicAdmin.java:229)
... 11 more
Caused by: org.apache.kafka.common.errors.InvalidReplicationFactorException: …