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()
 



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