4
我试图运行分布式壳为例（使用Hadoop的SVN结帐，这就是为什么版本为3.0.0-SNAPSHOT）：的Hadoop /纱线分布壳例如
yarn jar share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.0.0-SNAPSHOT.jar \
-jar share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.0.0-SNAPSHOT.jar \
org.apache.hadoop.yarn.applications.distributedshell.Client -shell_command whoami
然而这是行不通的：
12/09/03 13:44:37 FATAL distributedshell.Client: Error running CLient
java.lang.reflect.UndeclaredThrowableException
at org.apache.hadoop.yarn.exceptions.impl.pb.YarnRemoteExceptionPBImpl.unwrapAndThrowException(YarnRemoteExceptionPBImpl.java:128)
at org.apache.hadoop.yarn.api.impl.pb.client.ClientRMProtocolPBClientImpl.getClusterMetrics(ClientRMProtocolPBClientImpl.java:123)
at org.hadoop.yarn.client.YarnClientImpl.getYarnClusterMetrics(YarnClientImpl.java:163)
at org.apache.hadoop.yarn.applications.distributedshell.Client.run(Client.java:316)
at org.apache.hadoop.yarn.applications.distributedshell.Client.main(Client.java:164)
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.apache.hadoop.util.RunJar.main(RunJar.java:208)
Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): Unknown protocol: org.apache.hadoop.yarn.api.ClientRMProtocolPB
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.getProtocolImpl(ProtobufRpcEngine.java:398)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:456)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1732)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1728)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1367)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1726)
at org.apache.hadoop.ipc.Client.call(Client.java:1164)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
at $Proxy7.getClusterMetrics(Unknown Source)
at org.apache.hadoop.yarn.api.impl.pb.client.ClientRMProtocolPBClientImpl.getClusterMetrics(ClientRMProtocolPBClientImpl.java:121)
... 8 more
根本的问题似乎是在第二迹：
Unknown protocol: org.apache.hadoop.yarn.api.ClientRMProtocolPB
有谁知道Hadoops ProtoBufRPC的协议注册是如何工作的？任何想法如何调试？
编辑：随着Hadoop版本2.0.1-alpha，它的工作稍好。
12/09/03 18:43:14 INFO distributedshell.Client: Application did not finish. YarnState=FAILED, DSFinalStatus=FAILED. Breaking monitoring loop
12/09/03 18:43:14 ERROR distributedshell.Client: Application failed to complete successfully
因此，也许我的构建没有正常工作。任何关于导致上述问题的想法（我真的很喜欢使用HEAD，因为我打算在MapReduce之外做一些低级别的实验）？或HEAD部分损坏，HEAD上的分布式shell是否适合您？
我自己的（没有工作......）客户端仍然无法与同样的错误：
Caused by: java.io.IOException: Unknown protocol: org.apache.hadoop.yarn.api.ClientRMProtocolPB