[HADOOP-8565] AuthenticationFilter#doFilter warns unconditionally when using SPNEGO

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.0.3
• Target Version/s: 1.2.0
• Assignee: Alejandro Abdelnur
• Reporter: Eli Collins
• Created: 05/Jul/12 22:13
• Updated: 11/Jul/12 22:42
• Resolved: 11/Jul/12 22:42

Description

The following code in AuthenticationFilter#doFilter throws AuthenticationException (and warns) unconditionally because KerberosAuthenticator#authenticate returns null if SPNEGO is used.

  token = authHandler.authenticate(httpRequest, httpResponse);
  ...
  if (token != null) { ... } else {
    throw new AuthenticationException
  }