Apache kafka apachekafka：异常发出度量

我在桥接模式下使用Hortonworks沙盒HDP2.4。当我在kafka中运行./bin/kafka-server-start.sh config/server.properties以启动kafka broker时，出现以下错误：

[2016-06-23 06:45:37,779] ERROR Exception emitting metrics (org.apache.hadoop.metrics2.sink.kafka.KafkaTimelineMetricsReporter)        
org.apache.hadoop.metrics2.sink.timeline.UnableToConnectException: java.net.ConnectException: Connection refused                       
        at org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics(AbstractTimelineMetricsSink.java:87)       
        at org.apache.hadoop.metrics2.sink.kafka.KafkaTimelineMetricsReporter.access$200(KafkaTimelineMetricsReporter.java:58)         
        at org.apache.hadoop.metrics2.sink.kafka.KafkaTimelineMetricsReporter$TimelineScheduledReporter.report(KafkaTimelineMetricsRepo
rter.java:253)                                                                                    
Caused by: java.net.ConnectException: Connection refused                                                                               
        at java.net.PlainSocketImpl.socketConnect(Native Method)                                                                       
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)                                                
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)                                         
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)                                                  
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)                                                                  
        at java.net.Socket.connect(Socket.java:579)                                                                                    
        at sun.net.NetworkClient.doConnect(NetworkClient.java:175)                                                                     
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)                                                                 
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)                                                                 
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)                                                                     
        at sun.net.www.http.HttpClient.New(HttpClient.java:308)                                                                        
        at sun.net.www.http.HttpClient.New(HttpClient.java:326)                                                                        
        at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:998)                                    
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:934)                                        
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:852)                                             
        at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1093)                                    
        at org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics(AbstractTimelineMetricsSink.java:73)       
        ... 11 more                                                               Caused by: java.net.ConnectException: Connection refused                                                                               
        at java.net.PlainSocketImpl.socketConnect(Native Method)                                                                       
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)                                                
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)                                         
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)                                                  
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)                                                                  
        at java.net.Socket.connect(Socket.java:579)                                                                                    
        at sun.net.NetworkClient.doConnect(NetworkClient.java:175)                                                                     
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)                                                                 
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)                                                                 
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)                                                                     
        at sun.net.www.http.HttpClient.New(HttpClient.java:308)                                                                        
        at sun.net.www.http.HttpClient.New(HttpClient.java:326)                                                                        
        at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:998)                                    
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:934)                                        
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:852)                                             
        at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1093)                                    
        at org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics(AbstractTimelineMetricsSink.java:73)       
        ... 11 more         

[2016-06-23 06:45:37779]错误异常发出度量（org.apache.hadoop.metrics2.sink.kafka.kafkatimelinemetricsreptor）
org.apache.hadoop.metrics2.sink.timeline.UnableToConnectException:java.net.ConnectException:连接被拒绝
位于org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics（AbstractTimelineMetricsSink.java:87）
在org.apache.hadoop.metrics2.sink.kafka.kafkatimelinemetricsreptor.access$200（kafkatimelinemetricsreptor.java:58）
在org.apache.hadoop.metrics2.sink.kafka.KafkaTimelineMetricsReporter$TimelineScheduledReporter.report（KafkaTimelineMetricsRepo
rter.java:253）
原因：java.net.ConnectException:连接被拒绝
位于java.net.PlainSocketImpl.socketConnect（本机方法）
位于java.net.AbstractPlainSocketImpl.doConnect（AbstractPlainSocketImpl.java:339）
位于java.net.AbstractPlainSocketImpl.connectToAddress（AbstractPlainSocketImpl.java:200）
位于java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:182）
位于java.net.socksocketimpl.connect（socksocketimpl.java:392）
位于java.net.Socket.connect（Socket.java:579）
位于sun.net.NetworkClient.doConnect（NetworkClient.java:175）
位于sun.net.www.http.HttpClient.openServer（HttpClient.java:432）
位于sun.net.www.http.HttpClient.openServer（HttpClient.java:527）
http.HttpClient.（HttpClient.java:211）
http.HttpClient.New（HttpClient.java:308）
http.HttpClient.New（HttpClient.java:326）
位于sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient（HttpURLConnection.java:998）
位于sun.net.www.protocol.http.HttpURLConnection.plainConnect（HttpURLConnection.java:934）
位于sun.net.www.protocol.http.HttpURLConnection.connect（HttpURLConnection.java:852）
位于sun.net.www.protocol.http.HttpURLConnection.getOutputStream（HttpURLConnection.java:1093）
位于org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics（AbstractTimelineMetricsSink.java:73）
... 11更多原因：java.net.ConnectException:连接被拒绝
位于java.net.PlainSocketImpl.socketConnect（本机方法）
位于java.net.AbstractPlainSocketImpl.doConnect（AbstractPlainSocketImpl.java:339）
位于java.net.AbstractPlainSocketImpl.connectToAddress（AbstractPlainSocketImpl.java:200）
位于java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:182）
位于java.net.socksocketimpl.connect（socksocketimpl.java:392）
位于java.net.Socket.connect（Socket.java:579）
位于sun.net.NetworkClient.doConnect（NetworkClient.java:175）
位于sun.net.www.http.HttpClient.openServer（HttpClient.java:432）
位于sun.net.www.http.HttpClient.openServer（HttpClient.java:527）
http.HttpClient.（HttpClient.java:211）
http.HttpClient.New（HttpClient.java:308）
http.HttpClient.New（HttpClient.java:326）
位于sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient（HttpURLConnection.java:998）
位于sun.net.www.protocol.http.HttpURLConnection.plainConnect（HttpURLConnection.java:934）
位于sun.net.www.protocol.http.HttpURLConnection.connect（HttpURLConnection.java:852）
位于sun.net.www.protocol.http.HttpURLConnection.getOutputStream（HttpURLConnection.java:1093）
位于org.apache.hadoop.metrics2.sink.timeline.AbstractTimelineMetricsSink.emitMetrics（AbstractTimelineMetricsSink.java:73）
... 还有11个