org.apache.hadoop.hbase.replication.regionserver

Class ReplicationSinkManager

java.lang.Object

org.apache.hadoop.hbase.replication.regionserver.ReplicationSinkManager

public class ReplicationSinkManager
extends Object

Maintains a collection of peers to replicate to, and randomly selects a single peer to replicate to per set of data to replicate. Also handles keeping track of peer availability.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ReplicationSinkManager.SinkPeer Wraps a replication region server sink to provide the ability to identify it.

Constructor Summary

Constructors

Constructor and Description
ReplicationSinkManager(HConnection conn, String peerClusterId, ReplicationPeers replicationPeers, org.apache.hadoop.conf.Configuration conf) Instantiate for a single replication peer cluster.

Method Summary

Methods

Modifier and Type	Method and Description
ReplicationSinkManager.SinkPeer	getReplicationSink() Get a randomly-chosen replication sink to replicate to.
void	reportBadSink(ReplicationSinkManager.SinkPeer sinkPeer) Report a SinkPeer as being bad (i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReplicationSinkManager

public ReplicationSinkManager(HConnection conn,
                      String peerClusterId,
                      ReplicationPeers replicationPeers,
                      org.apache.hadoop.conf.Configuration conf)

Instantiate for a single replication peer cluster.

Parameters:

conn - connection to the peer cluster

peerClusterId - identifier of the peer cluster

replicationPeers - manages peer clusters being replicated to

conf - HBase configuration, used for determining replication source ratio and bad peer threshold

Method Detail

getReplicationSink

public ReplicationSinkManager.SinkPeer getReplicationSink()
                                                   throws IOException

Get a randomly-chosen replication sink to replicate to.

Returns:

a replication sink to replicate to

Throws:

IOException

reportBadSink

public void reportBadSink(ReplicationSinkManager.SinkPeer sinkPeer)

Report a SinkPeer as being bad (i.e. an attempt to replicate to it failed). If a single SinkPeer is reported as bad more than replication.bad.sink.threshold times, it will be removed from the pool of potential replication targets.

Parameters:

sinkPeer - The SinkPeer that had a failed replication attempt on it