View Javadoc

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.hbase.classification.InterfaceAudience;
21  import org.apache.hadoop.hbase.classification.InterfaceStability;
22  import org.apache.hadoop.conf.Configuration;
23  import org.apache.hadoop.hbase.HBaseInterfaceAudience;
24  import org.apache.hadoop.hbase.HConstants;
25  import org.apache.hadoop.hbase.ipc.RpcScheduler;
26  import org.apache.hadoop.hbase.ipc.SimpleRpcScheduler;
27  
28  /** Constructs a {@link SimpleRpcScheduler}. for the region server. */
29  @InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})
30  @InterfaceStability.Evolving
31  public class SimpleRpcSchedulerFactory implements RpcSchedulerFactory {
32    @Override
33    public RpcScheduler create(Configuration conf, RegionServerServices server) {
34      int handlerCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT,
35          HConstants.DEFAULT_REGION_SERVER_HANDLER_COUNT);
36      return new SimpleRpcScheduler(
37          conf,
38          handlerCount,
39          conf.getInt(HConstants.REGION_SERVER_META_HANDLER_COUNT,
40              HConstants.DEFAULT_REGION_SERVER_META_HANDLER_COUNT),
41          conf.getInt(HConstants.REGION_SERVER_REPLICATION_HANDLER_COUNT,
42              HConstants.DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT),
43          server,
44          server,
45          HConstants.QOS_THRESHOLD);
46    }
47  }