Taiwan Hadoop Forum

passthru("/opt/hadoop/bin/hadoop jar /var/www/123.jar /user/n4540/test /user/n4540/output 2>&1 1> /dev/null");

passthru('/opt/hadoop/bin/hadoop fs -cat /user/n4540/test/123.txt');
passthru("/opt/hadoop/bin/hadoop fs -ls /user/n4540");

13/10/31 17:49:30 ERROR security.UserGroupInformation: PriviledgedActionException as:www-data cause:org.apache.hadoop.security.AccessControlException: org.apache.hadoop.security.AccessControlException: Permission denied: user=www-data, access=WRITE, inode="mapred":n4540:supergroup:rwxr-xr-x
Exception in thread "main" org.apache.hadoop.security.AccessControlException: org.apache.hadoop.security.AccessControlException: Permission denied: user=www-data, access=WRITE, inode="mapred":n4540:supergroup:rwxr-xr-x
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
   at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
   at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:95)
   at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
   at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:1459)
   at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:362)
   at org.apache.hadoop.mapreduce.JobSubmissionFiles.getStagingDir(JobSubmissionFiles.java:126)
   at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:942)
   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:415)
   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
   at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936)
   at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:910)
   at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1353)
   at wordcount.WordCount.main(WordCount.java:56)
   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:606)
   at org.apache.hadoop.util.RunJar.main(RunJar.java:160)
Caused by: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.security.AccessControlException: Permission denied: user=www-data, access=WRITE, inode="mapred":n4540:supergroup:rwxr-xr-x
   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:217)
   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:197)
   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:141)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5758)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkAncestorAccess(FSNamesystem.java:5731)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:2502)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2469)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.mkdirs(NameNode.java:911)
   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:606)
   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$1.run(Server.java:1428)
   at java.security.AccessController.doPrivileged(Native Method)
   at javax.security.auth.Subject.doAs(Subject.java:415)
   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
   at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1426)

   at org.apache.hadoop.ipc.Client.call(Client.java:1113)
   at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
   at com.sun.proxy.$Proxy1.mkdirs(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:606)
   at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:85)
   at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)
   at com.sun.proxy.$Proxy1.mkdirs(Unknown Source)
   at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:1457)
   ... 16 more