Package org.apache.hadoop.hbase.master

Interface Summary

LogCleanerDelegate	Interface for the log cleaning function inside the master.
MasterServices	Services Master supplies
SplitLogManager.TaskFinisher	SplitLogManager can use objects implementing this interface to finish off a partially done task by SplitLogWorker.

Class Summary

AssignmentManager	Manages and performs region assignment.
AssignmentManager.RegionsOnDeadServer	Store the related regions on a dead server, used by processServerShutdown.
AssignmentManager.RegionState	State of a Region while undergoing transitions.
BulkAssigner	Base class used bulk assigning and unassigning regions.
DeadServer	Class to hold dead servers list and utility querying dead server list.
HMaster	HMaster is the "master server" for HBase.
HMasterCommandLine
HMasterCommandLine.LocalHMaster
LoadBalancer	Makes decisions about the placement and movement of Regions across RegionServers.
LoadBalancer.RegionPlan	Stores the plan for the move of an individual region.
LogCleaner	This Chore, everytime it runs, will clear the HLogs in the old logs folder that are deletable for each log cleaner in the chain.
MasterDumpServlet
MasterFileSystem	This class abstracts a bunch of operations the HMaster needs to interact with the underlying file system, including splitting log files, checking file system status, etc.
MasterStatusServlet	The servlet responsible for rendering the index page of the master.
ServerManager	The ServerManager class manages info about region servers - HServerInfo, load numbers, dying servers, etc.
SplitLogManager	Distributes the task of log splitting to the available region servers.
TimeToLiveLogCleaner	Log cleaner that uses the timestamp of the hlog to determine if it should be deleted.

Enum Summary

AssignmentManager.RegionState.State
SplitLogManager.TaskFinisher.Status	status that can be returned finish()