运行Hadoop示例Jar

时间：2013-11-22 02:04:03

标签： java macos hadoop bigdata

请帮忙。我在网上搜索，找不到任何东西。大多数类似问题没有答案或没有帮助。

您好我正在尝试运行Pi的Hadoop示例。我的设置全部完成并成功完成。我运行了bim / hadoop dfs -ls，我没有得到任何错误。

但是这个：

Sanjanas-MacBook-Pro:hadoop sanjanaagarwal$ /usr/local/Hadoop/bin/hadoop jar $HADOOP_HOME/hadoop-examples-*.jar pi 10 100
Number of Maps  = 10
Samples per Map = 100
13/11/21 20:57:47 WARN hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0 could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1591)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:771)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1439)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1435)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:394)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1433)

    at org.apache.hadoop.ipc.Client.call(Client.java:1150)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
    at com.sun.proxy.$Proxy0.addBlock(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:82)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
    at com.sun.proxy.$Proxy0.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3719)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3586)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2400(DFSClient.java:2792)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2987)

13/11/21 20:57:47 WARN hdfs.DFSClient: Error Recovery for block null bad datanode[0] nodes == null
13/11/21 20:57:47 WARN hdfs.DFSClient: Could not get block locations. Source file "/user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0" - Aborting...
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0 could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1591)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:771)
    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$Server.call(RPC.java:557)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1439)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1435)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:394)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1433)

    at org.apache.hadoop.ipc.Client.call(Client.java:1150)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
    at com.sun.proxy.$Proxy0.addBlock(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:82)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
    at com.sun.proxy.$Proxy0.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3719)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3586)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2400(DFSClient.java:2792)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2987)
13/11/21 20:57:47 ERROR hdfs.DFSClient: Exception closing file /user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0 : org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0 could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1591)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:771)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1439)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1435)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:394)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1433)

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/sanjanaagarwal/PiEstimator_TMP_3_141592654/in/part0 could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1591)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:771)
    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$Server.call(RPC.java:557)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1439)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1435)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:394)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1433)

    at org.apache.hadoop.ipc.Client.call(Client.java:1150)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
    at com.sun.proxy.$Proxy0.addBlock(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:82)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
    at com.sun.proxy.$Proxy0.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3719)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3586)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2400(DFSClient.java:2792)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2987)

我的hadoop-env.sh已全部完成。仍然不知道这里的问题是什么..如果有什么要检查的话请提一下命令，因为我对linux很新。感谢

2 个答案:

答案 0 :(得分：2)

我认为群集的DataNode没有运行。使用jps命令检查。

答案 1 :(得分：0)

无法解决错误，因此找到了一个解决方法，我在virtualBox上从云时代获得了一个虚拟机并在其上运行了cloudera。

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