Java Code Examples for

Following code examples demonstrate how to use hadoop. These examples are extracted from various highly rated open source projects. You can directly use these code snippets or view their entire linked source code. These snippets are extracted to provide contextual information about how to use this class in the real world. These samples also let you understand some good practices on how to use various code implementation of this class.

  protected Authenticator getFallBackAuthenticator() {
    return new PseudoAuthenticator() {
      protected String getUserName() {
        try {
          return UserGroupInformation.getLoginUser().getUserName();
        } catch (IOException e) {
          throw new SecurityException("Failed to obtain current username", e);

The PseudoAuthenticator implementation provides an authentication equivalent to Hadoop's Simple auth

entication, it trusts the value of the '' Java System property.

The '' value is propagated using an additional query string parameter #USER_NAME ('').

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