org.apache.hadoop.hbase.client.replication.ReplicationAdmin Maven / Gradle / Ivy
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.client.replication;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.regex.Pattern;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.ReplicationPeerNotFoundException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.replication.ReplicationException;
import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;
import org.apache.hadoop.hbase.replication.ReplicationPeerDescription;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;
import org.apache.hbase.thirdparty.com.google.common.collect.Lists;
/**
*
* This class provides the administrative interface to HBase cluster
* replication.
*
*
* Adding a new peer results in creating new outbound connections from every
* region server to a subset of region servers on the slave cluster. Each
* new stream of replication will start replicating from the beginning of the
* current WAL, meaning that edits from that past will be replicated.
*
*
* Removing a peer is a destructive and irreversible operation that stops
* all the replication streams for the given cluster and deletes the metadata
* used to keep track of the replication state.
*
*
* To see which commands are available in the shell, type
* replication.
*
*
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin} instead.
*/
@InterfaceAudience.Public
@Deprecated
public class ReplicationAdmin implements Closeable {
private static final Logger LOG = LoggerFactory.getLogger(ReplicationAdmin.class);
public static final String TNAME = "tableName";
public static final String CFNAME = "columnFamilyName";
// only Global for now, can add other type
// such as, 1) no global replication, or 2) the table is replicated to this cluster, etc.
public static final String REPLICATIONTYPE = "replicationType";
public static final String REPLICATIONGLOBAL = Integer
.toString(HConstants.REPLICATION_SCOPE_GLOBAL);
private final Connection connection;
private Admin admin;
/**
* Constructor that creates a connection to the local ZooKeeper ensemble.
* @param conf Configuration to use
* @throws IOException if an internal replication error occurs
* @throws RuntimeException if replication isn't enabled.
*/
public ReplicationAdmin(Configuration conf) throws IOException {
this.connection = ConnectionFactory.createConnection(conf);
admin = connection.getAdmin();
}
/**
* Add a new remote slave cluster for replication.
* @param id a short name that identifies the cluster
* @param peerConfig configuration for the replication slave cluster
* @param tableCfs the table and column-family list which will be replicated for this peer.
* A map from tableName to column family names. An empty collection can be passed
* to indicate replicating all column families. Pass null for replicating all table and column
* families
* @deprecated as release of 2.0.0, and it will be removed in 3.0.0,
* use {@link #addPeer(String, ReplicationPeerConfig)} instead.
*/
@Deprecated
public void addPeer(String id, ReplicationPeerConfig peerConfig,
Map> tableCfs) throws ReplicationException,
IOException {
if (tableCfs != null) {
peerConfig.setTableCFsMap(tableCfs);
}
this.admin.addReplicationPeer(id, peerConfig);
}
/**
* Add a new remote slave cluster for replication.
* @param id a short name that identifies the cluster
* @param peerConfig configuration for the replication slave cluster
* @deprecated use
* {@link org.apache.hadoop.hbase.client.Admin#addReplicationPeer(String, ReplicationPeerConfig)}
* instead
*/
@Deprecated
public void addPeer(String id, ReplicationPeerConfig peerConfig) throws ReplicationException,
IOException {
this.admin.addReplicationPeer(id, peerConfig);
}
/**
* @deprecated as release of 2.0.0, and it will be removed in 3.0.0
* */
@Deprecated
public static Map> parseTableCFsFromConfig(String tableCFsConfig) {
return ReplicationPeerConfigUtil.parseTableCFsFromConfig(tableCFsConfig);
}
/**
* @deprecated use
* {@link org.apache.hadoop.hbase.client.Admin#updateReplicationPeerConfig(String, ReplicationPeerConfig)}
* instead
*/
@Deprecated
public void updatePeerConfig(String id, ReplicationPeerConfig peerConfig) throws IOException {
this.admin.updateReplicationPeerConfig(id, peerConfig);
}
/**
* Removes a peer cluster and stops the replication to it.
* @param id a short name that identifies the cluster
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#removeReplicationPeer(String)} instead
*/
@Deprecated
public void removePeer(String id) throws IOException {
this.admin.removeReplicationPeer(id);
}
/**
* Restart the replication stream to the specified peer.
* @param id a short name that identifies the cluster
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#enableReplicationPeer(String)}
* instead
*/
@Deprecated
public void enablePeer(String id) throws IOException {
this.admin.enableReplicationPeer(id);
}
/**
* Stop the replication stream to the specified peer.
* @param id a short name that identifies the cluster
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#disableReplicationPeer(String)}
* instead
*/
@Deprecated
public void disablePeer(String id) throws IOException {
this.admin.disableReplicationPeer(id);
}
/**
* Get the number of slave clusters the local cluster has.
* @return number of slave clusters
* @throws IOException
* @deprecated
*/
@Deprecated
public int getPeersCount() throws IOException {
return this.admin.listReplicationPeers().size();
}
/**
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#listReplicationPeers()} instead
*/
@Deprecated
public Map listPeerConfigs() throws IOException {
List peers = this.admin.listReplicationPeers();
Map result = new TreeMap<>();
for (ReplicationPeerDescription peer : peers) {
result.put(peer.getPeerId(), peer.getPeerConfig());
}
return result;
}
/**
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#getReplicationPeerConfig(String)}
* instead
*/
@Deprecated
public ReplicationPeerConfig getPeerConfig(String id) throws IOException {
return admin.getReplicationPeerConfig(id);
}
/**
* Get the replicable table-cf config of the specified peer.
* @param id a short name that identifies the cluster
* @deprecated as release of 2.0.0, and it will be removed in 3.0.0,
* use {@link #getPeerConfig(String)} instead.
* */
@Deprecated
public String getPeerTableCFs(String id) throws IOException {
ReplicationPeerConfig peerConfig = admin.getReplicationPeerConfig(id);
return ReplicationPeerConfigUtil.convertToString(peerConfig.getTableCFsMap());
}
/**
* Append the replicable table-cf config of the specified peer
* @param id a short that identifies the cluster
* @param tableCfs table-cfs config str
* @throws ReplicationException
* @throws IOException
* @deprecated as release of 2.0.0, and it will be removed in 3.0.0,
* use {@link #appendPeerTableCFs(String, Map)} instead.
*/
@Deprecated
public void appendPeerTableCFs(String id, String tableCfs) throws ReplicationException,
IOException {
appendPeerTableCFs(id, ReplicationPeerConfigUtil.parseTableCFsFromConfig(tableCfs));
}
/**
* Append the replicable table-cf config of the specified peer
* @param id a short that identifies the cluster
* @param tableCfs A map from tableName to column family names
* @throws ReplicationException
* @throws IOException
*/
@Deprecated
public void appendPeerTableCFs(String id, Map> tableCfs)
throws ReplicationException, IOException {
this.admin.appendReplicationPeerTableCFs(id, copyTableCFs(tableCfs));
}
/**
* Remove some table-cfs from table-cfs config of the specified peer
* @param id a short name that identifies the cluster
* @param tableCf table-cfs config str
* @throws ReplicationException
* @throws IOException
* @deprecated as release of 2.0.0, and it will be removed in 3.0.0,
* use {@link #removePeerTableCFs(String, Map)} instead.
*/
@Deprecated
public void removePeerTableCFs(String id, String tableCf) throws ReplicationException,
IOException {
removePeerTableCFs(id, ReplicationPeerConfigUtil.parseTableCFsFromConfig(tableCf));
}
/**
* Remove some table-cfs from config of the specified peer
* @param id a short name that identifies the cluster
* @param tableCfs A map from tableName to column family names
* @throws ReplicationException
* @throws IOException
*/
@Deprecated
public void removePeerTableCFs(String id, Map> tableCfs)
throws ReplicationException, IOException {
this.admin.removeReplicationPeerTableCFs(id, copyTableCFs(tableCfs));
}
private Map>
copyTableCFs(Map> tableCfs) {
Map> newTableCfs = new HashMap<>();
if (tableCfs != null) {
tableCfs.forEach(
(table, cfs) -> newTableCfs.put(table, cfs != null ? Lists.newArrayList(cfs) : null));
}
return newTableCfs;
}
/**
* Set the replicable table-cf config of the specified peer
* @param id a short name that identifies the cluster
* @param tableCfs the table and column-family list which will be replicated for this peer.
* A map from tableName to column family names. An empty collection can be passed
* to indicate replicating all column families. Pass null for replicating all table and column
* families
*/
@Deprecated
public void setPeerTableCFs(String id, Map> tableCfs)
throws IOException {
ReplicationPeerConfig peerConfig = getPeerConfig(id);
peerConfig.setTableCFsMap(tableCfs);
updatePeerConfig(id, peerConfig);
}
/**
* Get the state of the specified peer cluster
* @param id String format of the Short name that identifies the peer,
* an IllegalArgumentException is thrown if it doesn't exist
* @return true if replication is enabled to that peer, false if it isn't
*/
@Deprecated
public boolean getPeerState(String id) throws ReplicationException, IOException {
List peers = admin.listReplicationPeers(Pattern.compile(id));
if (peers.isEmpty() || !id.equals(peers.get(0).getPeerId())) {
throw new ReplicationPeerNotFoundException(id);
}
return peers.get(0).isEnabled();
}
@Override
public void close() throws IOException {
if (this.connection != null) {
this.connection.close();
}
admin.close();
}
/**
* Find all column families that are replicated from this cluster
* @return the full list of the replicated column families of this cluster as:
* tableName, family name, replicationType
*
* Currently replicationType is Global. In the future, more replication
* types may be extended here. For example
* 1) the replication may only apply to selected peers instead of all peers
* 2) the replicationType may indicate the host Cluster servers as Slave
* for the table:columnFam.
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#listReplicatedTableCFs()} instead
*/
@Deprecated
public List> listReplicated() throws IOException {
List> replicationColFams = new ArrayList<>();
admin.listReplicatedTableCFs().forEach(
(tableCFs) -> {
String table = tableCFs.getTable().getNameAsString();
tableCFs.getColumnFamilyMap()
.forEach(
(cf, scope) -> {
HashMap replicationEntry = new HashMap<>();
replicationEntry.put(TNAME, table);
replicationEntry.put(CFNAME, cf);
replicationEntry.put(REPLICATIONTYPE, REPLICATIONGLOBAL);
replicationColFams.add(replicationEntry);
});
});
return replicationColFams;
}
/**
* Enable a table's replication switch.
* @param tableName name of the table
* @throws IOException if a remote or network exception occurs
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#enableTableReplication(TableName)}
* instead
*/
@Deprecated
public void enableTableRep(final TableName tableName) throws IOException {
admin.enableTableReplication(tableName);
}
/**
* Disable a table's replication switch.
* @param tableName name of the table
* @throws IOException if a remote or network exception occurs
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#disableTableReplication(TableName)}
* instead
*/
@Deprecated
public void disableTableRep(final TableName tableName) throws IOException {
admin.disableTableReplication(tableName);
}
/**
* @deprecated use {@link org.apache.hadoop.hbase.client.Admin#listReplicationPeers()} instead
*/
@VisibleForTesting
@Deprecated
List listReplicationPeers() throws IOException {
return admin.listReplicationPeers();
}
}