| Interface | Description | 
|---|---|
| BlockAlias | Interface used to load provided blocks. | 
| HostRestrictingAuthorizationFilter.HttpInteraction | |
| TokenVerifier<T extends org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier> | Interface to verify delegation tokens passed through WebHDFS. | 
| Class | Description | 
|---|---|
| FileRegion | This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| HostRestrictingAuthorizationFilter | An HTTP filter that can filter requests based on Hosts. | 
| MetricsLoggerTask | MetricsLoggerTask can be used as utility to dump metrics to log. | 
| Enum | Description | 
|---|---|
| HdfsServerConstants.BlockUCState | States, which a block can go through while it is under construction. | 
| HdfsServerConstants.NamenodeRole | Defines the NameNode role. | 
| HdfsServerConstants.NodeType | Type of the node | 
| HdfsServerConstants.ReplicaState | Block replica states, which it can go through while being constructed. | 
| HdfsServerConstants.RollingUpgradeStartupOption | Startup options for rolling upgrade. | 
| HdfsServerConstants.StartupOption | Startup options | 
| Storage.StorageState | 
Copyright © 2008–2023 Apache Software Foundation. All rights reserved.