我正在尝试完成关于hadoop和eclipse的本教程:http://v-lad.org/Tutorials/Hadoop/。它一直很好,直到最后一步"运行Hadoop项目"。在这里,当我在Eclipse中运行项目时,我收到错误:
14/11/26 16:25:24 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
14/11/26 16:25:24 ERROR security.UserGroupInformation: PriviledgedActionException as:User cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-User\mapred\staging\User660196934\.staging to 0700
java.io.IOException: Failed to set permissions of path: \tmp\hadoop-User\mapred\staging\User660196934\.staging to 0700
at org.apache.hadoop.fs.FileUtil.checkReturnValue(FileUtil.java:691)
at org.apache.hadoop.fs.FileUtil.setPermission(FileUtil.java:664)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:514)
at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:349)
at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:193)
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(Unknown Source)
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 TestDriver.main(TestDriver.java:41)
我之前有过这个权限问题(taskTracker无法启动因为"无法设置权限"),但我使用此修补程序解决了它:https://github.com/congainc/patch-hadoop_7682-1.0.x-win。我不明白为什么在运行Eclipse项目时这不起作用。我该如何解决这个问题?