2017-02-05 14:28:19,238 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 127.0.0.1
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:33:19,261 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:38:19,275 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:43:19,289 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:48:19,302 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:53:19,317 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:58:19,333 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:58:47,056 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:58:47,075 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 14:58:53,167 [New I/O server worker #1-1] WARN  com.alibaba.dubbo.remoting.transport. AbstractServer (AbstractServer.java:197) -  [DUBBO] All clients has discontected from /192.168.1.116:7070.  You can graceful shutdown now.,  dubbo version: 2.5.3, current host: 192.168.1.116
2017-02-05 15:03:19,348 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:05:05,778 [New I/O server worker #1-3] WARN  com.alibaba.dubbo.remoting.transport. AbstractServer (AbstractServer.java:197) -  [DUBBO] All clients has discontected from /192.168.1.116:7070.  You can graceful shutdown now.,  dubbo version: 2.5.3, current host: 192.168.1.116
2017-02-05 15:08:19,368 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:13:19,389 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:18:19,407 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:23:19,423 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:28:19,437 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:31:02,862 [New I/O server worker #1-5] WARN  com.alibaba.dubbo.remoting.transport. AbstractServer (AbstractServer.java:197) -  [DUBBO] All clients has discontected from /192.168.1.116:7070.  You can graceful shutdown now.,  dubbo version: 2.5.3, current host: 192.168.1.116
2017-02-05 15:33:19,457 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:19,476 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,370 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,371 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,372 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,372 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,373 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,373 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,374 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,374 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,375 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,375 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,376 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,376 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,377 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,377 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,378 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,378 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:38:31,379 [DubboSaveRegistryCache-thread-1] WARN  com.alibaba.dubbo.registry.support. AbstractRegistry (AbstractRegistry.java:221) -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 192.168.1.116
java.io. IOException: Can not lock the registry cache file /Users/lidong/.dubbo/dubbo-registry-127.0.0.1.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
	at com.alibaba.dubbo.registry.support. AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
	at com.alibaba.dubbo.registry.support. AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:43:19,494 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:48:19,511 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:53:19,528 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 15:55:59,408 [New I/O server worker #1-5] WARN  com.alibaba.dubbo.remoting.transport. AbstractServer (AbstractServer.java:197) -  [DUBBO] All clients has discontected from /192.168.1.116:7070.  You can graceful shutdown now.,  dubbo version: 2.5.3, current host: 192.168.1.116
2017-02-05 15:58:19,545 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:03:19,561 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:08:19,575 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:13:19,589 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:18:19,606 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:23:19,626 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:28:19,640 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:33:19,655 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:38:19,668 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:43:19,680 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:48:19,694 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:53:19,706 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 16:58:19,723 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:03:19,737 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:15:15,726 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:20:15,739 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:25:15,757 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:30:15,772 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:35:15,788 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:40:15,799 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:45:15,811 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:50:15,823 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 17:55:15,835 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 18:00:15,849 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 18:05:15,866 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 18:10:15,880 [DubboMonitorTimer-thread-1] ERROR com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2 (SimpleMonitorService.java:139) -  [DUBBO] Unexpected error occur at draw stat chart, cause: null, dubbo version: 2.5.3, current host: 192.168.1.116
java.lang. NullPointerException
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.draw(SimpleMonitorService.java:231)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService.access$300(SimpleMonitorService.java:64)
	at com.alibaba.dubbo.monitor.simple. SimpleMonitorService$2.run(SimpleMonitorService.java:137)
	at java.util.concurrent. Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent. FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent. ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang. Thread.run(Thread.java:745)
2017-02-05 18:13:38,168 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:39,390 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:41,487 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:43,529 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:45,252 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:46,776 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:48,804 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:50,136 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:51,420 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:53,429 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:54,542 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:56,284 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:57,602 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:13:59,430 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:14:00,739 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:14:02,824 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:14:03,988 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2017-02-05 18:14:05,662 [main-SendThread(localhost:2181)] WARN  org.apache.zookeeper. ClientCnxn$SendThread (ClientCnxn.java:1161) - Session 0x15a0c42c8020017 for server null, unexpected error, closing socket connection and attempting reconnect
java.net. ConnectException: Connection refused
	at sun.nio.ch. SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch. SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.zookeeper. ClientCnxn$SendThread.run(ClientCnxn.java:1119)
