TimeoutException: Timeout expired while initializing transactional state in 60000ms

  __transaction_state为kafka内部主题,在首次触发事务时系统自动创建该主题
  在kafka中是无法通过命令删除__transaction_state的,但是通过Eagle监控界面可以删除
  例如如下操作:
  [root@bigdata131:~]# kafka-topics.sh --zookeeper localhost:2181 --delete 
  --topic __transaction_state
  Error while executing topic command : Topic __transaction_state is a kafka 
  internal topic and is not allowed to be marked for deletion.
  
  initializing transactional超时的原因可能是把__transaction_state给误删除了
  解决方法: 将zookeeper节点下和kafka相关的路径都删除,然后重启kafka集群
  手动创建貌似无效,删除如下节点,生产环境慎用
  rmr /cluster
  rmr /brokers
  rmr /admin
  rmr /isr_change_notification
  rmr /log_dir_event_notification
  rmr /controller_epoch
  rmr /consumers
  rmr /latest_producer_id_block
  rmr /config