kafka集群部分节点宕机，生产者能继续消费，消费者不能正常消费
kafka
15:14:49,487 DEBUG AbstractCoordinator:561 - Sending GroupCoordinator request for group test_1 to broker 192.168.1.84:9092 (id: 0 rack: null)
15:14:49,489 DEBUG AbstractCoordinator:572 - Received GroupCoordinator response ClientResponse(receivedTimeMs=1541142889489, latencyMs=1, disconnected=false, requestHeader={api_key=10,api_version=0,correlation_id=239,client_id=consumer-1}, responseBody={error_code=15,coordinator={node_id=-1,host=,port=-1}}) for group test_1
15:14:49,489 DEBUG AbstractCoordinator:594 - Group coordinator lookup for group test_1 failed: The group coordinator is not available.
15:14:49,489 DEBUG AbstractCoordinator:215 - Coordinator discovery failed for group test_1, refreshing metadata
详细问题介绍如下：本人部署了 3节点kafka（91、92、93） ，使用zk管理，验证kafka容错性，91 kafka进程kill，kafka 正常生产 消费； 继续kill 92 kafka进程 ，kafka正常生产但是不能消费。消费客户端出现如下错误：
15:14:49,487 DEBUG AbstractCoordinator:561 - Sending GroupCoordinator request for group test_1 to broker 192.168.1.84:9092 (id: 0 rack: null)
15:14:49,489 DEBUG AbstractCoordinator:572 - Received GroupCoordinator response ClientResponse(receivedTimeMs=1541142889489, latencyMs=1, disconnected=false, requestHeader={api_key=10,api_version=0,correlation_id=239,client_id=consumer-1}, responseBody={error_code=15,coordinator={node_id=-1,host=,port=-1}}) for group test_1
15:14:49,489 DEBUG AbstractCoordinator:594 - Group coordinator lookup for group test_1 failed: The group coordinator is not available.
15:14:49,489 DEBUG AbstractCoordinator:215 - Coordinator discovery failed for group test_1, refreshing metadata