/** * 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.master.assignment; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; import java.io.IOException; import java.util.HashSet; import java.util.List; import java.util.Set; import org.apache.hadoop.hbase.HBaseClassTestRule; import org.apache.hadoop.hbase.HBaseTestingUtility; import org.apache.hadoop.hbase.ServerName; import org.apache.hadoop.hbase.client.RegionInfo; import org.apache.hadoop.hbase.master.HMaster; import org.apache.hadoop.hbase.testclassification.MasterTests; import org.apache.hadoop.hbase.testclassification.MediumTests; import org.junit.AfterClass; import org.junit.BeforeClass; import org.junit.ClassRule; import org.junit.Test; import org.junit.experimental.categories.Category; @Category({ MasterTests.class, MediumTests.class }) public class TestAssignmentManagerLoadMetaRegionState { @ClassRule public static final HBaseClassTestRule CLASS_RULE = HBaseClassTestRule.forClass(TestAssignmentManagerLoadMetaRegionState.class); private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); @BeforeClass public static void setUp() throws Exception { UTIL.startMiniCluster(1); } @AfterClass public static void tearDown() throws IOException { UTIL.shutdownMiniCluster(); } @Test public void testRestart() throws InterruptedException, IOException { ServerName sn = UTIL.getMiniHBaseCluster().getRegionServer(0).getServerName(); AssignmentManager am = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager(); Set<RegionInfo> regions = new HashSet<>(am.getRegionsOnServer(sn)); UTIL.getMiniHBaseCluster().stopMaster(0).join(); HMaster newMaster = UTIL.getMiniHBaseCluster().startMaster().getMaster(); UTIL.waitFor(30000, () -> newMaster.isInitialized()); am = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager(); List<RegionInfo> newRegions = am.getRegionsOnServer(sn); assertEquals(regions.size(), newRegions.size()); for (RegionInfo region : newRegions) { assertTrue(regions.contains(region)); } } }