001/** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019package org.apache.hadoop.hbase.regionserver; 020 021import org.apache.yetus.audience.InterfaceAudience; 022 023/** 024 * Listener which will get notified regarding flush requests of regions. 025 */ 026@InterfaceAudience.Private 027public interface FlushRequestListener { 028 029 /** 030 * Callback which will get called when a flush request is made for a region. 031 * 032 * @param type The type of flush. (ie. Whether a normal flush or flush because of global heap preassure) 033 * @param region The region for which flush is requested 034 */ 035 void flushRequested(FlushType type, Region region); 036}