When using Hadoop 2.4.0 or later, the Oozie client doesn't update the auth token when it expires. The client doesn't typically give you an error because it will still fallback and authenticate via Kerberos or Pseudo. However, this is inefficient.
This appears to be due to
HADOOP-10301, which made an incompatible change with how the AuthHandler tells the Authenticator when a token has expired. It used to give a 401 when the token expired, but now it will do SPNEGO (if you have Kerberos credentials) and return a new token, all in the same call. Oozie client's code doesn't handle that case.
With Pseudo Auth, it behaves a little differently and you now get a 403 on that first call, but it doesn't give you a new token.