1 /*
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase.regionserver;
20
21 import java.io.IOException;
22
23 import org.apache.hadoop.hbase.Server;
24 import org.apache.hadoop.classification.InterfaceAudience;
25 import org.apache.hadoop.fs.FileSystem;
26 import org.apache.hadoop.fs.Path;
27
28 /**
29 * Gateway to Cluster Replication.
30 * Used by {@link org.apache.hadoop.hbase.regionserver.HRegionServer}.
31 * One such application is a cross-datacenter
32 * replication service that can keep two hbase clusters in sync.
33 */
34 @InterfaceAudience.Private
35 public interface ReplicationService {
36
37 /**
38 * Initializes the replication service object.
39 * @throws IOException
40 */
41 void initialize(
42 Server rs, FileSystem fs, Path logdir, Path oldLogDir
43 ) throws IOException;
44
45 /**
46 * Start replication services.
47 * @throws IOException
48 */
49 void startReplicationService() throws IOException;
50
51 /**
52 * Stops replication service.
53 */
54 void stopReplicationService();
55 }