@InterfaceAudience.Public
See: Description
| Class | Description | 
|---|---|
| AccessTokenProvider | Provide an OAuth2 access token to be used to authenticate http calls in
 WebHDFS. | 
| AccessTokenTimer | Access tokens generally expire. | 
| ConfCredentialBasedAccessTokenProvider | Obtain an access token via a a credential (provided through the
 Configuration) using the
 
   Client Credentials Grant workflow. | 
| ConfRefreshTokenBasedAccessTokenProvider | Supply a access token obtained via a refresh token (provided through the
 Configuration using the second half of the
 
   Authorization Code Grant workflow. | 
| CredentialBasedAccessTokenProvider | Obtain an access token via the credential-based OAuth2 workflow. | 
| OAuth2ConnectionConfigurator | Configure a connection to use OAuth2 authentication. | 
| OAuth2Constants | Sundry constants relating to OAuth2 within WebHDFS. | 
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