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我正在尝试在没有 root 权限的 Linux 机器上运行这个 hadoop 字数统计示例。不过，我一直收到这个错误。

13/08/27 16:00:08 ERROR security.UserGroupInformation: PriviledgedActionException as:priyankara cause:org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.mapred.JobTrackerNotYetInitializedException: JobTracker is not yet RUNNING
    at org.apache.hadoop.mapred.JobTracker.checkJobTrackerState(JobTracker.java:5199)
    at org.apache.hadoop.mapred.JobTracker.getNewJobId(JobTracker.java:3543)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)

org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.mapred.JobTrackerNotYetInitializedException: JobTracker is not yet RUNNING
    at org.apache.hadoop.mapred.JobTracker.checkJobTrackerState(JobTracker.java:5199)
    at org.apache.hadoop.mapred.JobTracker.getNewJobId(JobTracker.java:3543)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1432)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1428)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)

    at org.apache.hadoop.ipc.Client.call(Client.java:1113)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
    at org.apache.hadoop.mapred.$Proxy2.getNewJobId(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:85)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)
    at org.apache.hadoop.mapred.$Proxy2.getNewJobId(Unknown Source)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:944)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
    at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936)
    at org.apache.hadoop.mapreduce.Job.submit(Job.java:550)
    at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580)
    at org.apache.hadoop.examples.WordCount.main(WordCount.java:82)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
    at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
    at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:160)

怎么了？我怎样才能解决这个问题？

我认为问题是我在那台机器上没有root权限。有没有办法在没有root权限的情况下运行这个例子？

4

3 回答 3

1

通过编辑 etc/hosts 文件解决了该问题。

我们必须将我们的 IP 地址和主机名放到 /etc/hosts 文件中。例如，如果您的 Ip 是 192.255.50.1，那么您的用户名是“用户”，您必须将它们都放在您的主机文件中，

192.255.50.1 user
于 2013-08-30T04:50:34.523 回答
0

请检查您的主机名，是“localhost”还是其他名称？

您可以尝试将主机名更改为“localhost”，然后重新启动 Hadoop。例如，

$ hostname localhost

$ $HADOOP_HOME/bin/stop-all.sh

$ $HADOOP_HOME/bin/start-all.sh

这适用于我的情况。供您参考，祝您好运！

于 2013-10-01T09:28:18.387 回答
0

我试图在 Windows 上使用 minicluster，这个 192.255.50.1 用户的建议解决了我的问题，我输入了 127.0.0.1 myloginname(user)。它解决了我的 Datanode 拒绝与 namenode 通信的问题：感谢 DilanG

于 2014-03-26T04:53:14.903 回答