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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.Abortable;
22  import org.apache.hadoop.hbase.HBaseInterfaceAudience;
23  import org.apache.hadoop.hbase.HConstants;
24  import org.apache.hadoop.hbase.classification.InterfaceAudience;
25  import org.apache.hadoop.hbase.classification.InterfaceStability;
26  import org.apache.hadoop.hbase.ipc.PriorityFunction;
27  import org.apache.hadoop.hbase.ipc.RpcScheduler;
28  import org.apache.hadoop.hbase.ipc.SimpleRpcScheduler;
29  
30  /** Constructs a {@link SimpleRpcScheduler}.
31   */
32  @InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})
33  @InterfaceStability.Evolving
34  public class SimpleRpcSchedulerFactory implements RpcSchedulerFactory {
35    @Override
36    @Deprecated
37    public RpcScheduler create(Configuration conf, PriorityFunction priority) {
38  	  return create(conf, priority, null);
39    }
40  
41    @Override
42    public RpcScheduler create(Configuration conf, PriorityFunction priority, Abortable server) {
43      int handlerCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT,
44          HConstants.DEFAULT_REGION_SERVER_HANDLER_COUNT);
45      return new SimpleRpcScheduler(
46        conf,
47        handlerCount,
48        conf.getInt(HConstants.REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT,
49          HConstants.DEFAULT_REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT),
50        conf.getInt(HConstants.REGION_SERVER_REPLICATION_HANDLER_COUNT,
51            HConstants.DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT),
52        priority,
53        server,
54        HConstants.QOS_THRESHOLD);
55    }
56  }