Resolve HDFS Authority bug

Author: fangyuzhong2016

src/main/java/com/fangyuzhong/intelliJ/hadoop/core/hadoop/HDFSUtil.java

@@ -107,7 +107,9 @@ public static FsAction getDirFileActionByUser(FileSystem fileSystem,String strDi
  }
  catch (IOException ex)
  {
- return null;
+ //如果出现异常，或许是ACL权限没有配置。默认给出所有权限
+ return FsAction.ALL;
+ // return null;
  }
  }