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 org.apache.hadoop.hbase.classification.InterfaceAudience;
22
23 /**
24 * Listener which will get notified regarding flush requests of regions.
25 */
26 @InterfaceAudience.Private
27 public interface FlushRequestListener {
28
29 /**
30 * Callback which will get called when a flush request is made for a region.
31 *
32 * @param type The type of flush. (ie. Whether a normal flush or flush because of global heap preassure)
33 * @param region The region for which flush is requested
34 */
35 void flushRequested(FlushType type, Region region);
36 }