| Class | Description | 
|---|---|
| AuthFilter | Subclass of  AuthenticationFilterthat
 obtains Hadoop-Auth configuration for webhdfs. | 
| AuthFilterInitializer | Filter initializer to initialize  AuthFilter. | 
| JsonUtil | JSON Utilities | 
| ParamFilter | A filter to change parameter names to lower cases
 so that parameter names are considered as case insensitive. | 
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