@Override
  public void initialize(URI name, Configuration conf) throws IOException {
    try {
      URI realUri = new URI (realScheme, realAuthority,
                            name.getPath(), name.getQuery(), name.getFragment());
      super.initialize(realUri, conf);
    } catch (URISyntaxException e) {
      throw new RuntimeException(e);
    }
  }
Create a proxy file system for fs.

@param fs FileSystem to create proxy for
@param myUri URI to use as proxy. Only the scheme and authority from
             this are used right now
shims/common/src/main/java/org/apache/hadoop/fs/ProxyFileSystem.java