1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.hadoop.hbase.regionserver; 19 20 import org.apache.hadoop.conf.Configuration; 21 import org.apache.hadoop.hbase.classification.InterfaceAudience; 22 import org.apache.hadoop.hbase.classification.InterfaceStability; 23 import org.apache.hadoop.hbase.HBaseInterfaceAudience; 24 import org.apache.hadoop.hbase.ipc.RpcScheduler; 25 26 /** 27 * A factory class that constructs an {@link org.apache.hadoop.hbase.ipc.RpcScheduler} for 28 * a region server. 29 */ 30 @InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX}) 31 @InterfaceStability.Evolving 32 public interface RpcSchedulerFactory { 33 34 /** 35 * Constructs a {@link org.apache.hadoop.hbase.ipc.RpcScheduler}. 36 * 37 * Please note that this method is called in constructor of {@link HRegionServer}, so some 38 * fields may not be ready for access. The reason that {@code HRegionServer} is passed as 39 * parameter here is that an RPC scheduler may need to access data structure inside 40 * {@code HRegionServer} (see example in {@link SimpleRpcSchedulerFactory}). 41 */ 42 RpcScheduler create(Configuration conf, RegionServerServices server); 43 }