org.apache.hadoop.hdfs.protocol
Interfaces 
ClientDatanodeProtocol
ClientProtocol
DataTransferProtocol
FSConstants
Classes 
Block
BlockListAsLongs
DatanodeID
DatanodeInfo
DataTransferProtocol.PipelineAck
DataTransferProtocol.Receiver
DataTransferProtocol.Sender
DirectoryListing
HdfsFileStatus
LocatedBlock
LocatedBlocks
Enums 
DatanodeInfo.AdminStates
DataTransferProtocol.BlockConstructionStage
DataTransferProtocol.Op
DataTransferProtocol.Status
FSConstants.DatanodeReportType
FSConstants.SafeModeAction
FSConstants.UpgradeAction
Exceptions 
AlreadyBeingCreatedException
DSQuotaExceededException
NSQuotaExceededException
QuotaExceededException
RecoveryInProgressException
UnregisteredNodeException
UnresolvedPathException