Andrew Wang updated HDFS-4493:
    Target Version/s: 2.8.0, 3.0.0-alpha2  (was: 2.1.0-beta)

> webhdfs fails after SPNEGO token expires
> ----------------------------------------
>                 Key: HDFS-4493
>                 URL: https://issues.apache.org/jira/browse/HDFS-4493
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0-alpha1
>            Reporter: Daryn Sharp
>            Priority: Critical
> Webhdfs assumes that SPNEGO's {{AuthenticationException}} is always fatal.  
> The exception is thrown if authentication truly fails due to bad credentials, 
> _but_ it's also thrown when the auth token expires after 10h.  The retry 
> policies are short-circuited and the fs becomes unusable which is unsuitable 
> for long running processes/daemons.

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