| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.protocolPB | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.hdfs.server.aliasmap | |
| org.apache.hadoop.hdfs.server.blockmanagement | |
| org.apache.hadoop.hdfs.server.common | |
| org.apache.hadoop.hdfs.server.common.blockaliasmap | The AliasMap defines mapping of PROVIDED HDFS blocks to data in remote
 storage systems. | 
| org.apache.hadoop.hdfs.server.common.blockaliasmap.impl | |
| org.apache.hadoop.hdfs.server.datanode | |
| org.apache.hadoop.hdfs.server.datanode.fsdataset | |
| org.apache.hadoop.hdfs.server.namenode.metrics | 
| Class and Description | 
|---|
| FileRegion This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| 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. | 
| Class and Description | 
|---|
| FileRegion This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| Class and Description | 
|---|
| HdfsServerConstants.BlockUCState States, which a block can go through while it is under construction. | 
| Class and Description | 
|---|
| BlockAlias Interface used to load provided blocks. | 
| 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 | 
| HostRestrictingAuthorizationFilter.HttpInteraction | 
| Storage.StorageState | 
| Class and Description | 
|---|
| BlockAlias Interface used to load provided blocks. | 
| Class and Description | 
|---|
| FileRegion This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| Class and Description | 
|---|
| FileRegion This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| HdfsServerConstants.ReplicaState Block replica states, which it can go through while being constructed. | 
| Class and Description | 
|---|
| FileRegion This class is used to represent provided blocks that are file regions,
 i.e., can be described using (path, offset, length). | 
| Class and Description | 
|---|
| HdfsServerConstants.NamenodeRole Defines the NameNode role. | 
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