| /* |
| * 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.accumulo.server.master.balancer; |
| |
| import static org.easymock.EasyMock.createMock; |
| import static org.easymock.EasyMock.expect; |
| import static org.easymock.EasyMock.replay; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Set; |
| import java.util.SortedMap; |
| import java.util.TreeMap; |
| import java.util.UUID; |
| |
| import org.apache.accumulo.core.client.admin.TableOperations; |
| import org.apache.accumulo.core.conf.Property; |
| import org.apache.accumulo.core.data.TableId; |
| import org.apache.accumulo.core.dataImpl.KeyExtent; |
| import org.apache.accumulo.core.master.thrift.TableInfo; |
| import org.apache.accumulo.core.master.thrift.TabletServerStatus; |
| import org.apache.accumulo.core.metadata.TServerInstance; |
| import org.apache.accumulo.core.tabletserver.thrift.TabletStats; |
| import org.apache.accumulo.core.util.HostAndPort; |
| import org.apache.accumulo.server.ServerContext; |
| import org.apache.accumulo.server.conf.TableConfiguration; |
| import org.apache.accumulo.server.master.state.TabletMigration; |
| import org.apache.hadoop.io.Text; |
| import org.easymock.EasyMock; |
| import org.junit.Test; |
| |
| @Deprecated(since = "2.1.0") |
| public class TableLoadBalancerTest { |
| |
| private static Map<String,String> TABLE_ID_MAP = Map.of("t1", "a1", "t2", "b12", "t3", "c4"); |
| |
| private static TServerInstance mkts(String address, String session) { |
| return new TServerInstance(HostAndPort.fromParts(address, 1234), session); |
| } |
| |
| private static TabletServerStatus status(Object... config) { |
| TabletServerStatus result = new TabletServerStatus(); |
| result.tableMap = new HashMap<>(); |
| String tablename = null; |
| for (Object c : config) { |
| if (c instanceof String) { |
| tablename = (String) c; |
| } else { |
| TableInfo info = new TableInfo(); |
| int count = (Integer) c; |
| info.onlineTablets = count; |
| info.tablets = count; |
| result.tableMap.put(tablename, info); |
| } |
| } |
| return result; |
| } |
| |
| static SortedMap<TServerInstance,TabletServerStatus> state; |
| |
| static List<TabletStats> generateFakeTablets(TServerInstance tserver, TableId tableId) { |
| List<TabletStats> result = new ArrayList<>(); |
| TabletServerStatus tableInfo = state.get(tserver); |
| // generate some fake tablets |
| for (int i = 0; i < tableInfo.tableMap.get(tableId.canonical()).onlineTablets; i++) { |
| TabletStats stats = new TabletStats(); |
| stats.extent = |
| new KeyExtent(tableId, new Text(tserver.getHost() + String.format("%03d", i + 1)), |
| new Text(tserver.getHost() + String.format("%03d", i))).toThrift(); |
| result.add(stats); |
| } |
| return result; |
| } |
| |
| static class DefaultLoadBalancer |
| extends org.apache.accumulo.server.master.balancer.DefaultLoadBalancer { |
| |
| public DefaultLoadBalancer(TableId table) { |
| super(table); |
| } |
| |
| @Override |
| public void init(ServerContext context) {} |
| |
| @Override |
| public List<TabletStats> getOnlineTabletsForTable(TServerInstance tserver, TableId tableId) { |
| return generateFakeTablets(tserver, tableId); |
| } |
| } |
| |
| // ugh... so wish I had provided mock objects to the LoadBalancer in the manager |
| class TableLoadBalancer extends org.apache.accumulo.server.master.balancer.TableLoadBalancer { |
| |
| // use our new classname to test class loading |
| @Override |
| protected String getLoadBalancerClassNameForTable(TableId table) { |
| return DefaultLoadBalancer.class.getName(); |
| } |
| |
| // we don't have real tablet servers to ask: invent some online tablets |
| @Override |
| public List<TabletStats> getOnlineTabletsForTable(TServerInstance tserver, TableId tableId) { |
| return generateFakeTablets(tserver, tableId); |
| } |
| |
| @Override |
| protected TableOperations getTableOperations() { |
| TableOperations tops = createMock(TableOperations.class); |
| expect(tops.tableIdMap()).andReturn(TABLE_ID_MAP).anyTimes(); |
| replay(tops); |
| return tops; |
| } |
| } |
| |
| private ServerContext createMockContext() { |
| ServerContext context = createMock(ServerContext.class); |
| final String instanceId = |
| UUID.nameUUIDFromBytes(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 0}).toString(); |
| expect(context.getProperties()).andReturn(new Properties()).anyTimes(); |
| expect(context.getInstanceID()).andReturn(instanceId).anyTimes(); |
| expect(context.getZooKeepers()).andReturn("10.0.0.1:1234").anyTimes(); |
| expect(context.getZooKeepersSessionTimeOut()).andReturn(30_000).anyTimes(); |
| expect(context.getZooKeeperRoot()).andReturn("/root/").anyTimes(); |
| return context; |
| } |
| |
| @Test |
| public void test() { |
| final ServerContext context = createMockContext(); |
| TableConfiguration conf = createMock(TableConfiguration.class); |
| @SuppressWarnings("removal") |
| Property TABLE_CLASSPATH = Property.TABLE_CLASSPATH; |
| expect(conf.resolve(Property.TABLE_CLASSLOADER_CONTEXT, TABLE_CLASSPATH)) |
| .andReturn(Property.TABLE_CLASSLOADER_CONTEXT).anyTimes(); |
| expect(conf.get(Property.TABLE_CLASSLOADER_CONTEXT)).andReturn("").anyTimes(); |
| expect(context.getTableConfiguration(EasyMock.anyObject())).andReturn(conf).anyTimes(); |
| replay(context, conf); |
| |
| String t1Id = TABLE_ID_MAP.get("t1"), t2Id = TABLE_ID_MAP.get("t2"), |
| t3Id = TABLE_ID_MAP.get("t3"); |
| state = new TreeMap<>(); |
| TServerInstance svr = mkts("10.0.0.1", "0x01020304"); |
| state.put(svr, status(t1Id, 10, t2Id, 10, t3Id, 10)); |
| |
| Set<KeyExtent> migrations = Collections.emptySet(); |
| List<TabletMigration> migrationsOut = new ArrayList<>(); |
| TableLoadBalancer tls = new TableLoadBalancer(); |
| tls.init(context); |
| tls.balance(state, migrations, migrationsOut); |
| assertEquals(0, migrationsOut.size()); |
| |
| state.put(mkts("10.0.0.2", "0x02030405"), status()); |
| tls = new TableLoadBalancer(); |
| tls.init(context); |
| tls.balance(state, migrations, migrationsOut); |
| int count = 0; |
| Map<TableId,Integer> movedByTable = new HashMap<>(); |
| movedByTable.put(TableId.of(t1Id), 0); |
| movedByTable.put(TableId.of(t2Id), 0); |
| movedByTable.put(TableId.of(t3Id), 0); |
| for (TabletMigration migration : migrationsOut) { |
| if (migration.oldServer.equals(svr)) { |
| count++; |
| } |
| TableId key = migration.tablet.tableId(); |
| movedByTable.put(key, movedByTable.get(key) + 1); |
| } |
| assertEquals(15, count); |
| for (Integer moved : movedByTable.values()) { |
| assertEquals(5, moved.intValue()); |
| } |
| } |
| |
| } |