001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertTrue;
022
023import java.io.IOException;
024import java.util.EnumSet;
025import org.apache.hadoop.hbase.ClusterMetrics;
026import org.apache.hadoop.hbase.HBaseClassTestRule;
027import org.apache.hadoop.hbase.testclassification.ClientTests;
028import org.apache.hadoop.hbase.testclassification.MediumTests;
029import org.junit.ClassRule;
030import org.junit.Test;
031import org.junit.experimental.categories.Category;
032import org.junit.runner.RunWith;
033import org.junit.runners.Parameterized;
034
035/**
036 * Testcase for HBASE-22135.
037 */
038@RunWith(Parameterized.class)
039@Category({ MediumTests.class, ClientTests.class })
040public class TestAsyncAdminMasterSwitch extends TestAsyncAdminBase {
041
042  @ClassRule
043  public static final HBaseClassTestRule CLASS_RULE =
044    HBaseClassTestRule.forClass(TestAsyncAdminMasterSwitch.class);
045
046  @Test
047  public void testSwitch() throws IOException, InterruptedException {
048    assertEquals(TEST_UTIL.getHBaseCluster().getRegionServerThreads().size(),
049      admin.getClusterMetrics(EnumSet.of(ClusterMetrics.Option.SERVERS_NAME)).join()
050        .getServersName().size());
051    TEST_UTIL.getMiniHBaseCluster().stopMaster(0).join();
052    assertTrue(TEST_UTIL.getMiniHBaseCluster().waitForActiveAndReadyMaster(30000));
053    // make sure that we could still call master
054    assertEquals(TEST_UTIL.getHBaseCluster().getRegionServerThreads().size(),
055      admin.getClusterMetrics(EnumSet.of(ClusterMetrics.Option.SERVERS_NAME)).join()
056        .getServersName().size());
057  }
058}