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 }