程序包 org.apache.hadoop.hbase.coordination

接口概要

接口	说明
CloseRegionCoordination	Coordinated operations for close region handlers.
CloseRegionCoordination.CloseRegionDetails	Marker interface for region closing tasks.
OpenRegionCoordination	Cocoordination operations for opening regions.
OpenRegionCoordination.OpenRegionDetails	Interface for region opening tasks.
RegionMergeCoordination	Coordination operations for region merge transaction.
RegionMergeCoordination.RegionMergeDetails	Dummy interface for region merge transaction details.
SplitLogManagerCoordination	Coordination for SplitLogManager.
SplitLogWorkerCoordination	Coordinated operations for SplitLogWorker and WALSplitterHandler Important methods for SplitLogWorker: SplitLogWorkerCoordination.isReady() called from SplitLogWorker.run() to check whether the coordination is ready to supply the tasks SplitLogWorkerCoordination.taskLoop() loop for new tasks until the worker is stopped SplitLogWorkerCoordination.isStop() a flag indicates whether worker should finish SplitLogWorkerCoordination.registerListener() called from SplitLogWorker.run() and could register listener for external changes in coordination (if required) SplitLogWorkerCoordination.endTask(SplitLogTask, AtomicLong, SplitTaskDetails) notify coordination engine that Important methods for WALSplitterHandler: splitting task has completed.
SplitLogWorkerCoordination.SplitTaskDetails	Interface for log-split tasks Used to carry implementation details in encapsulated way through Handlers to the coordination API.
SplitTransactionCoordination	Coordination operations for split transaction.
SplitTransactionCoordination.SplitTransactionDetails	Dummy interface for split transaction details.
ZKSplitLogManagerCoordination.TaskFinisher	SplitLogManager can use objects implementing this interface to finish off a partially done task by SplitLogWorker.

类概要

类	说明
BaseCoordinatedStateManager	Base class for CoordinatedStateManager implementations.
SplitLogManagerCoordination.SplitLogManagerDetails	Detail class that shares data between coordination and split log manager
ZkCloseRegionCoordination	ZK-based implementation of CloseRegionCoordination.
ZkCloseRegionCoordination.ZkCloseRegionDetails	ZK-based implementation.
ZkCoordinatedStateManager	ZooKeeper-based implementation of CoordinatedStateManager.
ZkOpenRegionCoordination	ZK-based implementation of OpenRegionCoordination.
ZkOpenRegionCoordination.ZkOpenRegionDetails	ZK-based implementation.
ZkRegionMergeCoordination
ZkRegionMergeCoordination.ZkRegionMergeDetails	ZK-based implementation.
ZKSplitLogManagerCoordination	ZooKeeper based implementation of SplitLogManagerCoordination
ZKSplitLogManagerCoordination.ZkSplitLogManagerDetails
ZkSplitLogWorkerCoordination	ZooKeeper based implementation of SplitLogWorkerCoordination It listen for changes in ZooKeeper and
ZkSplitLogWorkerCoordination.ZkSplitTaskDetails	When ZK-based implementation wants to complete the task, it needs to know task znode and current znode cversion (needed for subsequent update operation).
ZKSplitTransactionCoordination
ZKSplitTransactionCoordination.ZkSplitTransactionDetails	ZK-based implementation.

枚举概要

枚举	说明
ZKSplitLogManagerCoordination.TaskFinisher.Status	status that can be returned finish()