Larry McCay created HADOOP-12929:
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             Summary: JWTRedirectAuthenticationHandler must accommodate null 
expiration time
                 Key: HADOOP-12929
                 URL: https://issues.apache.org/jira/browse/HADOOP-12929
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
            Reporter: Larry McCay
            Assignee: Larry McCay


The underlying JWT token within the hadoop-jwt cookie should be able to have no 
expiration time. This allows the token lifecycle to be the same as the cookie 
that contains it.

Current validation processing of the token interprets the absence of an 
expiration time as requiring a new token to be acquired. JWT itself considers 
the exp to be an optional claim. As such, this patch will change the processing 
to accept a null expiration as valid for as long as the cookie is presented.



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