| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread; |
| import org.apache.hadoop.hbase.util.JVMClusterUtil.RegionServerThread; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Tests the boot order indifference between regionserver and master |
| */ |
| @Category({MiscTests.class, MediumTests.class}) |
| public class TestClusterBootOrder { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestClusterBootOrder.class); |
| |
| private static final long SLEEP_INTERVAL = 1000; |
| private static final long SLEEP_TIME = 4000; |
| |
| private HBaseTestingUtility testUtil; |
| private LocalHBaseCluster cluster; |
| private RegionServerThread rs; |
| private MasterThread master; |
| |
| @Before |
| public void setUp() throws Exception { |
| testUtil = new HBaseTestingUtility(); |
| testUtil.startMiniDFSCluster(1); |
| testUtil.startMiniZKCluster(1); |
| testUtil.createRootDir(); //manually setup hbase dir to point to minidfscluster |
| cluster = new LocalHBaseCluster(testUtil.getConfiguration(), 0, 0); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| cluster.shutdown(); |
| cluster.join(); |
| testUtil.shutdownMiniZKCluster(); |
| testUtil.shutdownMiniDFSCluster(); |
| } |
| |
| private void startRegionServer() throws Exception { |
| rs = cluster.addRegionServer(); |
| rs.start(); |
| |
| for (int i=0; i * SLEEP_INTERVAL < SLEEP_TIME ;i++) { |
| //we cannot block on wait for rs at this point , since master is not up. |
| Thread.sleep(SLEEP_INTERVAL); |
| assertTrue(rs.isAlive()); |
| } |
| } |
| |
| private void startMaster() throws Exception { |
| master = cluster.addMaster(); |
| master.start(); |
| |
| for (int i=0; i * SLEEP_INTERVAL < SLEEP_TIME ;i++) { |
| Thread.sleep(SLEEP_INTERVAL); |
| assertTrue(master.isAlive()); |
| } |
| } |
| |
| private void waitForClusterOnline() { |
| while (true) { |
| if (master.getMaster().isInitialized()) { |
| break; |
| } |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException ignored) { |
| // Keep waiting |
| } |
| } |
| rs.waitForServerOnline(); |
| } |
| |
| /** |
| * Tests launching the cluster by first starting regionserver, and then the master |
| * to ensure that it does not matter which is started first. |
| */ |
| @Test |
| public void testBootRegionServerFirst() throws Exception { |
| startRegionServer(); |
| startMaster(); |
| waitForClusterOnline(); |
| } |
| |
| /** |
| * Tests launching the cluster by first starting master, and then the regionserver |
| * to ensure that it does not matter which is started first. |
| */ |
| @Test |
| public void testBootMasterFirst() throws Exception { |
| startMaster(); |
| startRegionServer(); |
| waitForClusterOnline(); |
| } |
| |
| } |