hadoop时遇到遇到ERROR security.UserGroupInformation: PriviledgedActionException as:xxxx cause:java.io.I

在windows下的eclipse里操纵ubuntu远程跑hadoop项目遇到问题：

 16:52:22 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

 16:52:22 ERROR security.UserGroupInformation: PriviledgedActionException as:chenli cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-chenli\mapred\staging\chenli1971412180\.staging to 0700

Exception in thread "main" java.io.IOException: Failed to set permissions of path: \tmp\hadoop-chenli\mapred\staging\chenli1971412180\.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.mapreduce.Job.submit(Job.java:550)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580)
at firsthadoop.org.eg.WordCount.main(WordCount.java:142)

解决：

hadoop-core-1.0.2.jar的org.apache.hadoop.fs.FileUtil文件中找到以下部分，注释掉checkReturnValue方法中的下面代码有段需要注释：
private static void checkReturnValue(boolean rv, File p,
FsPermission permission) throws IOException {
/*
//win7 connect to linux hadoop
if (!rv) {
throw new IOException("Failed to set permissions of path: " + p +" to " +  String.format("o", permission.toShort()));
}
*/
}

或者下载：http://download.csdn.net/detail/u010668907/9413683直接替换原本的hadoop-core-1.0.2.jar