我正在努力完成这篇关于hadoop和eclipse的教程：http://v-lad.org/tutorials/hadoop/. 在“运行hadoop项目”的最后一步之前，一切都很顺利。在这里，当我在eclipse中运行项目时，我得到一个错误：

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)

我以前遇到过此权限问题（tasktracker无法启动，因为“设置权限失败”），但我使用以下修补程序解决了此问题：https://github.com/congainc/patch-hadoop_7682-1.0.x-win. 我不明白为什么在运行项目表单eclipse时这不起作用。如何解决这个问题？