org.apache.hadoop.hdfs.server.blockmanagement
Interfaces 
DatanodeStatistics
MutableBlockCollection
Classes 
BlockInfoUnderConstruction
BlockPlacementPolicyWithNodeGroup
BlockPlacementStatusDefault
BlockStoragePolicySuite
DatanodeDescriptor.CachedBlocksList
DatanodeStorageInfo
NumberReplicas
Enums 
CorruptReplicasMap.Reason
DatanodeDescriptor.CachedBlocksList.Type
Exceptions 
UnresolvedTopologyException