关于tair淘宝分布式数据库的异常问题！

[fba7482]

我测试tair数据库是否正常，运行测试程序就报这样的错误，有大神能帮小弟我解释解释么？

[framework] 2015-10-18 10:37:16,102 - com.taobao.tair.impl.ConfigServer -2125 [main] ERROR com.taobao.tair.impl.ConfigServer  - get config failed from: 192.168.0.250:5198
com.taobao.tair.etc.TairClientException: get tair connection error,targetAddress is 192.168.0.250:5198
	at com.taobao.tair.comm.TairClientFactory.get(TairClientFactory.java:88)
	at com.taobao.tair.impl.ConfigServer.retrieveConfigure(ConfigServer.java:112)
	at com.taobao.tair.impl.DefaultTairManager.init(DefaultTairManager.java:79)
	at com.ocs.dao.impl.CFSessionDAOTairImpl.<init>(CFSessionDAOTairImpl.java:71)
	at Tair.TairTest.testConcurrent(TairTest.java:79)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.util.concurrent.ExecutionException: org.apache.mina.common.RuntimeIOException: Failed to get the session.
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
	at java.util.concurrent.FutureTask.get(FutureTask.java:111)
	at com.taobao.tair.comm.TairClientFactory.get(TairClientFactory.java:85)
	... 28 more
Caused by: org.apache.mina.common.RuntimeIOException: Failed to get the session.
	at org.apache.mina.common.support.DefaultConnectFuture.getSession(DefaultConnectFuture.java:63)
	at com.taobao.tair.comm.TairClientFactory.createClient(TairClientFactory.java:118)
	at com.taobao.tair.comm.TairClientFactory.access$000(TairClientFactory.java:31)
	at com.taobao.tair.comm.TairClientFactory$1.call(TairClientFactory.java:76)
	at com.taobao.tair.comm.TairClientFactory$1.call(TairClientFactory.java:74)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at com.taobao.tair.comm.TairClientFactory.get(TairClientFactory.java:82)
	... 28 more
Caused by: java.net.ConnectException
	at org.apache.mina.transport.socket.nio.SocketConnector.processTimedOutSessions(SocketConnector.java:326)
	at org.apache.mina.transport.socket.nio.SocketConnector.access$900(SocketConnector.java:53)
	at org.apache.mina.transport.socket.nio.SocketConnector$Worker.run(SocketConnector.java:386)
	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)
[framework] 2015-10-18 10:37:16,108 - com.taobao.tair.impl.ConfigServer -2131 [main] ERROR com.taobao.tair.impl.ConfigServer  - retrive from config server 192.168.0.250:5198 failed, result: null