Failed to set permissions of path

Win7環境下經過Eclipse鏈接Hadoop1.2.1集羣時，會遇到以下報錯： 
Exception in thread "main" java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Administrator\mapred\staging\Administrator-519341271\.staging to 0700

此時只須要修改org.apache.hadoop.fs.FileUtil文件並從新編譯便可，簡單解決步驟以下：

1.到源碼中拷貝src/core/org/apache/hadoop/fs/FileUtil.java文件，粘貼到eclipse工程目錄下

4.找到如下部分，註釋掉checkReturnValue方法中的代碼

  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("%04o", permission.toShort()));

    }

*/

  }

5.hadoop-core-1.2.1.jar 解包

6.用上面更改的FileUtil.class（在工程輸出目錄）覆蓋包裏面的同文件

6.在dos上面從新打包，打包之替換原來拷貝下來hadoop目錄裏面的hadoop-core-1.2.1.jar

7.將包從新導入工程，把工程裏面的包替換掉

 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-hadoop/mapred/staging/hadoop-2103292795/.staging/job_local_0001