org.apache.hadoop.hdfs
Interfaces 
BlockReader
RemotePeerFactory
Classes 
BlockReaderFactory.BlockReaderPeer
CorruptFileBlockIterator
DFSClient.Conf
DFSClient.DFSDataInputStream
DFSHedgedReadMetrics
DFSInputStream.ReadStatistics
DFSUtil.ConfiguredNNAddress
ExtendedBlockId
HAUtil
NameNodeProxies
NameNodeProxies.ProxyAndInfo
ShortCircuitShm
ShortCircuitShm.ShmId
ShortCircuitShm.SlotId
Enums 
StorageType