| /** |
| * 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.client; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.ArrayList; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import org.apache.hadoop.hbase.ClusterMetrics.Option; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.testclassification.ClientTests; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| @Category({ ClientTests.class, MediumTests.class }) |
| public class TestAsyncDecommissionAdminApi extends TestAsyncAdminBase { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestAsyncDecommissionAdminApi.class); |
| |
| @Test |
| public void testAsyncDecommissionRegionServers() throws Exception { |
| admin.balancerSwitch(false, true); |
| List<ServerName> decommissionedRegionServers = admin.listDecommissionedRegionServers().get(); |
| assertTrue(decommissionedRegionServers.isEmpty()); |
| |
| TEST_UTIL.createMultiRegionTable(tableName, FAMILY, 4); |
| |
| ArrayList<ServerName> clusterRegionServers = |
| new ArrayList<>(admin.getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS)).get() |
| .getLiveServerMetrics().keySet()); |
| |
| assertEquals(TEST_UTIL.getHBaseCluster().getLiveRegionServerThreads().size(), |
| clusterRegionServers.size()); |
| |
| HashMap<ServerName, List<RegionInfo>> serversToDecommssion = new HashMap<>(); |
| // Get a server that has regions. We will decommission one of the servers, |
| // leaving one online. |
| int i; |
| for (i = 0; i < clusterRegionServers.size(); i++) { |
| List<RegionInfo> regionsOnServer = admin.getRegions(clusterRegionServers.get(i)).get(); |
| if (regionsOnServer.size() > 0) { |
| serversToDecommssion.put(clusterRegionServers.get(i), regionsOnServer); |
| break; |
| } |
| } |
| |
| clusterRegionServers.remove(i); |
| ServerName remainingServer = clusterRegionServers.get(0); |
| |
| // Decommission |
| admin.decommissionRegionServers(new ArrayList<ServerName>(serversToDecommssion.keySet()), |
| true).get(); |
| assertEquals(1, admin.listDecommissionedRegionServers().get().size()); |
| |
| // Verify the regions have been off the decommissioned servers, all on the remaining server. |
| for (ServerName server : serversToDecommssion.keySet()) { |
| for (RegionInfo region : serversToDecommssion.get(server)) { |
| TEST_UTIL.assertRegionOnServer(region, remainingServer, 10000); |
| } |
| } |
| |
| // Maybe the TRSP is still not finished at master side, since the reportRegionTransition just |
| // updates the procedure store, and we still need to wake up the procedure and execute it in the |
| // procedure executor, which is asynchronous |
| TEST_UTIL.waitUntilNoRegionsInTransition(10000); |
| |
| // Recommission and load regions |
| for (ServerName server : serversToDecommssion.keySet()) { |
| List<byte[]> encodedRegionNames = serversToDecommssion.get(server).stream() |
| .map(region -> region.getEncodedNameAsBytes()).collect(Collectors.toList()); |
| admin.recommissionRegionServer(server, encodedRegionNames).get(); |
| } |
| assertTrue(admin.listDecommissionedRegionServers().get().isEmpty()); |
| // Verify the regions have been moved to the recommissioned servers |
| for (ServerName server : serversToDecommssion.keySet()) { |
| for (RegionInfo region : serversToDecommssion.get(server)) { |
| TEST_UTIL.assertRegionOnServer(region, server, 10000); |
| } |
| } |
| } |
| } |