Class Summary |
HMaster |
HMaster is the "master server" for HBase. |
MetaRegion |
Describes a meta region and its server |
OldLogsCleaner |
This Chore, everytime it runs, will clear the logs in the old logs folder
that are older than hbase.master.logcleaner.ttl and, in order to limit the
number of deletes it sends, will only delete maximum 20 in a single run. |
ProcessRegionClose |
ProcessRegionClose is the way we do post-processing on a closed region. |
ProcessRegionOpen |
ProcessRegionOpen is instantiated when a region server reports that it is
serving a region. |
RegionManager |
Class to manage assigning regions to servers, state of root and meta, etc. |
RegionServerOperationQueue |
Keeps up the queue of RegionServerOperation s. |
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. |
ZKUnassignedWatcher |
Watches the UNASSIGNED znode in ZK for the master, and handles all events
relating to region transitions. |