org.apache.kafka.common.errors.TimeoutException：5000毫秒后无法发送请求

Question

我正在使用Kafka V 0.10.2（8核，16 GB RAM）。执行命令时

  

./ kafka-consumer-groups.sh --bootstrap-server localhost：9092   --describe --group

有时候我会遇到这个例外：

Exception in consumer group command (kafka.admin.ConsumerGroupCommand$)
java.lang.RuntimeException: Request GROUP_COORDINATOR failed on brokers List(localhost:9092 (id: -1 rack: null))
    at kafka.admin.AdminClient.sendAnyNode(AdminClient.scala:66)
    at kafka.admin.AdminClient.findCoordinator(AdminClient.scala:71)
    at kafka.admin.AdminClient.describeConsumerGroup(AdminClient.scala:157)
    at kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.collectGroupAssignment(ConsumerGroupCommand.scala:399)
    at kafka.admin.ConsumerGroupCommand$ConsumerGroupService.describeGroup(ConsumerGroupCommand.scala:148)
    at kafka.admin.ConsumerGroupCommand$ConsumerGroupService.describeGroup$(ConsumerGroupCommand.scala:147)
    at kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.describeGroup(ConsumerGroupCommand.scala:387)
    at kafka.admin.ConsumerGroupCommand$.main(ConsumerGroupCommand.scala:73)
    at kafka.admin.ConsumerGroupCommand.main(ConsumerGroupCommand.scala) 

我错过了什么吗？如何解决？