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java.lang.Objectorg.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager
public class ReplicationSourceManager
This class is responsible to manage all the replication sources. There are two classes of sources:
Nested Class Summary | |
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class |
ReplicationSourceManager.OtherRegionServerWatcher
Watcher used to be notified of the other region server's death in the local cluster. |
class |
ReplicationSourceManager.PeersWatcher
Watcher used to follow the creation and deletion of peer clusters. |
Constructor Summary | |
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ReplicationSourceManager(ReplicationZookeeper zkHelper,
org.apache.hadoop.conf.Configuration conf,
Stoppable stopper,
org.apache.hadoop.fs.FileSystem fs,
AtomicBoolean replicating,
org.apache.hadoop.fs.Path logDir,
org.apache.hadoop.fs.Path oldLogDir)
Creates a replication manager and sets the watch on all the other registered region servers |
Method Summary | |
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ReplicationSourceInterface |
addSource(String id)
Add a new normal source to this region server |
void |
closeRecoveredQueue(ReplicationSourceInterface src)
Clear the references to the specified old source |
org.apache.hadoop.fs.FileSystem |
getFs()
Get the handle on the local file system |
protected SortedSet<String> |
getHLogs()
Get a copy of the hlogs of the first source on this rs |
org.apache.hadoop.fs.Path |
getLogDir()
Get the directory where hlogs are stored by their RSs |
org.apache.hadoop.fs.Path |
getOldLogDir()
Get the directory where hlogs are archived |
ReplicationSourceInterface |
getReplicationSource(org.apache.hadoop.conf.Configuration conf,
org.apache.hadoop.fs.FileSystem fs,
ReplicationSourceManager manager,
Stoppable stopper,
AtomicBoolean replicating,
String peerClusterId)
Factory method to create a replication source |
ReplicationZookeeper |
getRepZkWrapper()
Get the ZK help of this manager |
List<ReplicationSourceInterface> |
getSources()
Get a list of all the normal sources of this rs |
void |
init()
Adds a normal source per registered peer cluster and tries to process all old region server hlog queues |
void |
join()
Terminate the replication on this region server |
void |
logPositionAndCleanOldLogs(org.apache.hadoop.fs.Path log,
String id,
long position,
boolean queueRecovered)
Provide the id of the peer and a log key and this method will figure which hlog it belongs to and will log, for this region server, the current position. |
void |
removePeer(String id)
Thie method first deletes all the recovered sources for the specified id, then deletes the normal source (deleting all related data in ZK). |
void |
transferQueues(String rsZnode)
Transfer all the queues of the specified to this region server. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ReplicationSourceManager(ReplicationZookeeper zkHelper, org.apache.hadoop.conf.Configuration conf, Stoppable stopper, org.apache.hadoop.fs.FileSystem fs, AtomicBoolean replicating, org.apache.hadoop.fs.Path logDir, org.apache.hadoop.fs.Path oldLogDir)
zkHelper
- the zk helper for replicationconf
- the configuration to usestopper
- the stopper object for this region serverfs
- the file system to usereplicating
- the status of the replication on this clusterlogDir
- the directory that contains all hlog directories of live RSsoldLogDir
- the directory where old logs are archivedMethod Detail |
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public void logPositionAndCleanOldLogs(org.apache.hadoop.fs.Path log, String id, long position, boolean queueRecovered)
log
- Path to the log currently being replicated from
replication status in zookeeper. It will also delete older entries.id
- id of the peer clusterposition
- current location in the logqueueRecovered
- indicates if this queue comes from another region serverpublic void init() throws IOException
IOException
public ReplicationSourceInterface addSource(String id) throws IOException
id
- the id of the peer cluster
IOException
public void join()
protected SortedSet<String> getHLogs()
public List<ReplicationSourceInterface> getSources()
public ReplicationZookeeper getRepZkWrapper()
public ReplicationSourceInterface getReplicationSource(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, ReplicationSourceManager manager, Stoppable stopper, AtomicBoolean replicating, String peerClusterId) throws IOException
conf
- the configuration to usefs
- the file system to usemanager
- the manager to usestopper
- the stopper object for this region serverreplicating
- the status of the replication on this clusterpeerClusterId
- the id of the peer cluster
IOException
public void transferQueues(String rsZnode)
rsZnode
- public void closeRecoveredQueue(ReplicationSourceInterface src)
src
- source to clearpublic void removePeer(String id)
id
- The id of the peer clusterpublic org.apache.hadoop.fs.Path getOldLogDir()
public org.apache.hadoop.fs.Path getLogDir()
public org.apache.hadoop.fs.FileSystem getFs()
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