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.ipc.controller;
19
20 import org.apache.hadoop.conf.Configuration;
21 import org.apache.hadoop.hbase.HConstants;
22 import org.apache.hadoop.hbase.TableName;
23 import org.apache.hadoop.hbase.ipc.DelegatingPayloadCarryingRpcController;
24 import org.apache.hadoop.hbase.ipc.PayloadCarryingRpcController;
25
26 import com.google.protobuf.RpcController;
27
28 /**
29 * {@link RpcController} that sets the appropriate priority of RPC calls destined for Phoenix index
30 * tables.
31 */
32 class InterRegionServerRpcController extends DelegatingPayloadCarryingRpcController {
33 private final int priority;
34
35 public InterRegionServerRpcController(PayloadCarryingRpcController delegate, Configuration conf) {
36 super(delegate);
37 // Set priority higher that normal, but lower than high
38 this.priority = (HConstants.HIGH_QOS + HConstants.NORMAL_QOS) / 2;
39 }
40
41 @Override
42 public void setPriority(final TableName tn) {
43 if (tn.isSystemTable()) {
44 super.setPriority(tn);
45 } else {
46 setPriority(this.priority);
47 }
48 }
49
50 }