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| Packages that use org.apache.hadoop.dfs | |
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| org.apache.hadoop.dfs | A distributed implementation of FileSystem. |
| org.apache.hadoop.dfs.namenode.metrics | |
| Classes in org.apache.hadoop.dfs used by org.apache.hadoop.dfs | |
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| DataChecksum
This class provides inteface and utilities for processing checksums for DFS data transfers. |
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| DataNode
DataNode is a class (and program) that stores a set of blocks for a DFS deployment. |
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| DatanodeDescriptor
DatanodeDescriptor tracks stats on a given DataNode, such as available storage capacity, last update time, etc., and maintains a set of blocks stored on the datanode. |
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| DatanodeID
DatanodeID is composed of the data node name (hostname:portNumber) and the data storage ID, which it currently represents. |
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| DatanodeInfo
DatanodeInfo represents the status of a DataNode. |
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| DatanodeInfo.AdminStates
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| DistributedFileSystem.DiskStatus
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| FSConstants
Some handy constants |
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| FSConstants.CheckpointStates
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| FSConstants.DatanodeReportType
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| FSConstants.NodeType
Type of the node |
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| FSConstants.SafeModeAction
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| FSConstants.StartupOption
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| FSConstants.UpgradeAction
Distributed upgrade actions: 1. |
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| FSDatasetInterface
This is an interface for the underlying storage that stores blocks for a data node. |
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| FSDatasetInterface.BlockWriteStreams
This class contains the output streams for the data and checksum of a block |
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| FSDatasetInterface.MetaDataInputStream
This class provides the input stream and length of the metadata of a block |
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| HftpFileSystem
An implementation of a protocol for accessing filesystems over HTTP. |
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| LocatedBlocks
Collection of blocks with their locations and the file length. |
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| NameNode
NameNode serves as both directory namespace manager and "inode table" for the Hadoop DFS. |
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| NameNodeMetrics
This class is for maintaining the various NameNode statistics and publishing them through the metrics interfaces. |
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| UpgradeStatusReport
Base upgrade upgradeStatus class. |
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| Classes in org.apache.hadoop.dfs used by org.apache.hadoop.dfs.namenode.metrics | |
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| NameNodeMetrics
This class is for maintaining the various NameNode statistics and publishing them through the metrics interfaces. |
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