org.apache.hadoop.hbase.replication.regionserver

Class Replication

java.lang.Object

org.apache.hadoop.hbase.replication.regionserver.Replication

All Implemented Interfaces:

ConfigurationObserver, PropagatingConfigurationObserver, ReplicationService, ReplicationSinkService, ReplicationSourceService

@InterfaceAudience.Private
public class Replication
extends Object
implements ReplicationSourceService, ReplicationSinkService, PropagatingConfigurationObserver

Gateway to Replication. Used by HRegionServer.

Implement PropagatingConfigurationObserver mainly for registering ReplicationPeers, so we can recreating the replication peer storage.

Constructor Summary

Constructors

Constructor and Description
Replication() Empty constructor

Method Summary

Modifier and Type	Method and Description
void	deregisterChildren(ConfigurationManager manager)
PeerProcedureHandler	getPeerProcedureHandler() Returns a Handler to handle peer procedures.
ReplicationSourceManager	getReplicationManager() Get the replication sources manager
void	initialize(Server server, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path logDir, org.apache.hadoop.fs.Path oldLogDir, WALFactory walFactory) Initializes the replication service object.
void	join() Join with the replication threads
void	onConfigurationChange(org.apache.hadoop.conf.Configuration conf)
ReplicationLoad	refreshAndGetReplicationLoad() Refresh and Get ReplicationLoad
void	registerChildren(ConfigurationManager manager)
void	replicateLogEntries(List<org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WALEntry> entries, CellScanner cells, String replicationClusterId, String sourceBaseNamespaceDirPath, String sourceHFileArchiveDirPath) Carry on the list of log entries down to the sink
void	startReplicationService() If replication is enabled and this cluster is a master, it starts
void	stopReplicationService() Stops replication service.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Replication

public Replication()

Empty constructor

Method Detail

initialize

public void initialize(Server server,
                       org.apache.hadoop.fs.FileSystem fs,
                       org.apache.hadoop.fs.Path logDir,
                       org.apache.hadoop.fs.Path oldLogDir,
                       WALFactory walFactory)
                throws IOException

Description copied from interface: ReplicationService

Initializes the replication service object.

Specified by:

initialize in interface ReplicationService

Throws:

IOException

getPeerProcedureHandler

public PeerProcedureHandler getPeerProcedureHandler()

Description copied from interface: ReplicationSourceService

Returns a Handler to handle peer procedures.

Specified by:

getPeerProcedureHandler in interface ReplicationSourceService

stopReplicationService

public void stopReplicationService()

Stops replication service.

Specified by:

stopReplicationService in interface ReplicationService

join

public void join()

Join with the replication threads

replicateLogEntries

public void replicateLogEntries(List<org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WALEntry> entries,
                                CellScanner cells,
                                String replicationClusterId,
                                String sourceBaseNamespaceDirPath,
                                String sourceHFileArchiveDirPath)
                         throws IOException

Carry on the list of log entries down to the sink

Specified by:

replicateLogEntries in interface ReplicationSinkService

Parameters:

entries - list of entries to replicate

cells - The data -- the cells -- that entries describes (the entries do not contain the Cells we are replicating; they are passed here on the side in this CellScanner).

replicationClusterId - Id which will uniquely identify source cluster FS client configurations in the replication configuration directory

sourceBaseNamespaceDirPath - Path that point to the source cluster base namespace directory required for replicating hfiles

sourceHFileArchiveDirPath - Path that point to the source cluster hfile archive directory

Throws:

IOException

startReplicationService

public void startReplicationService()
                             throws IOException

If replication is enabled and this cluster is a master, it starts

Specified by:

startReplicationService in interface ReplicationService

Throws:

IOException

getReplicationManager

public ReplicationSourceManager getReplicationManager()

Get the replication sources manager

Specified by:

getReplicationManager in interface ReplicationSourceService

Returns:

the manager if replication is enabled, else returns false

refreshAndGetReplicationLoad

public ReplicationLoad refreshAndGetReplicationLoad()

Description copied from interface: ReplicationService

Refresh and Get ReplicationLoad

Specified by:

refreshAndGetReplicationLoad in interface ReplicationService

onConfigurationChange

public void onConfigurationChange(org.apache.hadoop.conf.Configuration conf)

Specified by:

onConfigurationChange in interface ConfigurationObserver

registerChildren

public void registerChildren(ConfigurationManager manager)

Specified by:

registerChildren in interface PropagatingConfigurationObserver

deregisterChildren

public void deregisterChildren(ConfigurationManager manager)

Specified by:

deregisterChildren in interface PropagatingConfigurationObserver