001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.regionserver; 019 020import org.apache.hadoop.conf.Configuration; 021import org.apache.hadoop.hbase.Abortable; 022import org.apache.hadoop.hbase.HConstants; 023import org.apache.hadoop.hbase.ipc.MasterFifoRpcScheduler; 024import org.apache.hadoop.hbase.ipc.PriorityFunction; 025import org.apache.hadoop.hbase.ipc.RpcScheduler; 026import org.apache.yetus.audience.InterfaceAudience; 027import org.apache.yetus.audience.InterfaceStability; 028 029/** 030 * Factory to use when you want to use the {@link MasterFifoRpcScheduler} 031 */ 032@InterfaceAudience.Private 033@InterfaceStability.Evolving 034public class MasterFifoRpcSchedulerFactory extends FifoRpcSchedulerFactory { 035 @Override 036 public RpcScheduler create(Configuration conf, PriorityFunction priority, Abortable server) { 037 int totalHandlerCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT, 038 HConstants.DEFAULT_REGION_SERVER_HANDLER_COUNT); 039 int rsReportHandlerCount = Math.max(1, conf 040 .getInt(MasterFifoRpcScheduler.MASTER_SERVER_REPORT_HANDLER_COUNT, totalHandlerCount / 2)); 041 int callHandlerCount = Math.max(1, totalHandlerCount - rsReportHandlerCount); 042 return new MasterFifoRpcScheduler(conf, callHandlerCount, rsReportHandlerCount); 043 } 044}