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Class Summary |
| AssignmentManager |
Manages and performs region assignment. |
| 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 |
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| HMasterCommandLine.LocalHMaster |
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| 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 wal logs in the old logs folder
that are deletable for each log cleaner in the chain, in order to limit the
number of deletes it sends, will only delete maximum 20 in a single run. |
| 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. |
| ServerManager |
The ServerManager class manages info about region servers - HServerInfo,
load numbers, dying servers, etc. |
| TimeToLiveLogCleaner |
Log cleaner that uses the timestamp of the hlog to determine if it should
be deleted. |