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hadoop - 在namenode上拒绝连接

我已经搜索了web和stackoverflow很长一段时间但它没用.

我在2节点集群设置中安装了hadoop yarn 2.2.0.但出了点问题.当我在主节点上使用start-dfs.sh和start-yarn.sh启动hadoop守护进程时,它们在master和slave中成功运行(我的主机的主机名是RM,我的slave的主机名是slv).他们可以成功地互相争斗.但是当我想要运行一个作业时,会出现以下错误:

14/01/02 04:22:53 WARN util.NativeCodeLoader:无法为你的平台加载native-hadoop库...使用内置的java类适用于14/01/02 04:22:56 WARN hdfs.DFSClient: DataStreamer Exception org.apache.hadoop.ipc.RemoteException(java.io.IOException):File/user/root/QuasiMonteCarlo_1388665371850_813553673/in/part0只能复制到0个节点而不是minReplication(= 1).正在运行0个数据节点,并且此操作中不排除任何节点.org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget(BlockManager.java:1384)org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2477)org.apache位于org.apache.hadoop.hdfs.protocol的org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)的.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555) .proto.ClientNamenodeProtocolProtos $ ClientNamenodeProtocol $ 2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)org.apache.hadoop.ipc.ProtobufRpcEngine $ Server $ ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)org.apache.hadoop.ipc.RPC $ Server.call(RPC.java:928)位于org.apache.hadoop.ipc.Server $ Handler $ 1.run(Server.java:2048)org.apache.hadoop.ipc.Server $ Handler $ 1.run(Server. java:2044)at java.security.AccessController.doPrivileged(Native Method)at javax.security.auth.Subject.doAs(Subject.java:416)at o org.apache.hadoop.ipc.Server $ Handler.run(Server.java:2042)中的rg.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)

at org.apache.hadoop.ipc.Client.call(Client.java:1347)
at org.apache.hadoop.ipc.Client.call(Client.java:1300)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
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:622)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy9.addBlock(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:330)
at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1226)
at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:514)

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