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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.ipc;
19  
20  import static org.junit.Assert.assertFalse;
21  import static org.junit.Assert.assertNotNull;
22  import static org.junit.Assert.assertNotSame;
23  import static org.junit.Assert.assertSame;
24  
25  import org.apache.hadoop.conf.Configuration;
26  import org.apache.hadoop.hbase.HBaseConfiguration;
27  import org.apache.hadoop.hbase.HConstants;
28  import org.apache.hadoop.hbase.testclassification.SmallTests;
29  import org.junit.Test;
30  import org.junit.experimental.categories.Category;
31  
32  @Category({ SmallTests.class })
33  public class TestGlobalEventLoopGroup {
34  
35    @Test
36    public void test() {
37      Configuration conf = HBaseConfiguration.create();
38      conf.setBoolean(AsyncRpcClient.USE_GLOBAL_EVENT_LOOP_GROUP, true);
39      AsyncRpcClient client = new AsyncRpcClient(conf, HConstants.CLUSTER_ID_DEFAULT, null);
40      assertNotNull(AsyncRpcClient.GLOBAL_EVENT_LOOP_GROUP);
41      AsyncRpcClient client1 = new AsyncRpcClient(conf, HConstants.CLUSTER_ID_DEFAULT, null);
42      assertSame(client.bootstrap.group(), client1.bootstrap.group());
43      client1.close();
44      assertFalse(client.bootstrap.group().isShuttingDown());
45  
46      conf.setBoolean(AsyncRpcClient.USE_GLOBAL_EVENT_LOOP_GROUP, false);
47      AsyncRpcClient client2 = new AsyncRpcClient(conf, HConstants.CLUSTER_ID_DEFAULT, null);
48      assertNotSame(client.bootstrap.group(), client2.bootstrap.group());
49      client2.close();
50  
51      client.close();
52    }
53  }