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| 1 | +/* |
| 2 | + * Licensed to the Apache Software Foundation (ASF) under one or more |
| 3 | + * contributor license agreements. See the NOTICE file distributed with |
| 4 | + * this work for additional information regarding copyright ownership. |
| 5 | + * The ASF licenses this file to You under the Apache License, Version 2.0 |
| 6 | + * (the "License"); you may not use this file except in compliance with |
| 7 | + * the License. You may obtain a copy of the License at |
| 8 | + * |
| 9 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | + * |
| 11 | + * Unless required by applicable law or agreed to in writing, software |
| 12 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | + * See the License for the specific language governing permissions and |
| 15 | + * limitations under the License. |
| 16 | + */ |
| 17 | + |
| 18 | +package org.apache.fluss.client.admin; |
| 19 | + |
| 20 | +import org.apache.fluss.client.Connection; |
| 21 | +import org.apache.fluss.client.ConnectionFactory; |
| 22 | +import org.apache.fluss.cluster.rebalance.GoalType; |
| 23 | +import org.apache.fluss.cluster.rebalance.ServerTag; |
| 24 | +import org.apache.fluss.config.ConfigOptions; |
| 25 | +import org.apache.fluss.config.Configuration; |
| 26 | +import org.apache.fluss.metadata.DatabaseDescriptor; |
| 27 | +import org.apache.fluss.metadata.PartitionSpec; |
| 28 | +import org.apache.fluss.metadata.TableDescriptor; |
| 29 | +import org.apache.fluss.metadata.TablePath; |
| 30 | +import org.apache.fluss.server.replica.ReplicaManager; |
| 31 | +import org.apache.fluss.server.testutils.FlussClusterExtension; |
| 32 | + |
| 33 | +import org.junit.jupiter.api.AfterEach; |
| 34 | +import org.junit.jupiter.api.BeforeEach; |
| 35 | +import org.junit.jupiter.api.Test; |
| 36 | +import org.junit.jupiter.api.extension.RegisterExtension; |
| 37 | + |
| 38 | +import java.time.Duration; |
| 39 | +import java.util.Arrays; |
| 40 | +import java.util.Collections; |
| 41 | + |
| 42 | +import static org.apache.fluss.record.TestData.DATA1_SCHEMA; |
| 43 | +import static org.apache.fluss.record.TestData.DATA1_TABLE_DESCRIPTOR; |
| 44 | +import static org.apache.fluss.testutils.common.CommonTestUtils.retry; |
| 45 | +import static org.assertj.core.api.Assertions.assertThat; |
| 46 | + |
| 47 | +/** ITCase for rebalance. */ |
| 48 | +public class RebalanceITCase { |
| 49 | + @RegisterExtension |
| 50 | + public static final FlussClusterExtension FLUSS_CLUSTER_EXTENSION = |
| 51 | + FlussClusterExtension.builder() |
| 52 | + .setNumOfTabletServers(4) |
| 53 | + .setClusterConf(initConfig()) |
| 54 | + .build(); |
| 55 | + |
| 56 | + private Connection conn; |
| 57 | + private Admin admin; |
| 58 | + |
| 59 | + @BeforeEach |
| 60 | + protected void setup() throws Exception { |
| 61 | + conn = ConnectionFactory.createConnection(FLUSS_CLUSTER_EXTENSION.getClientConfig()); |
| 62 | + admin = conn.getAdmin(); |
| 63 | + } |
| 64 | + |
| 65 | + @AfterEach |
| 66 | + protected void teardown() throws Exception { |
| 67 | + if (admin != null) { |
| 68 | + admin.close(); |
| 69 | + admin = null; |
| 70 | + } |
| 71 | + |
| 72 | + if (conn != null) { |
| 73 | + conn.close(); |
| 74 | + conn = null; |
| 75 | + } |
| 76 | + } |
| 77 | + |
| 78 | + @Test |
| 79 | + void testRebalanceForLogTable() throws Exception { |
| 80 | + String dbName = "db-balance"; |
| 81 | + admin.createDatabase(dbName, DatabaseDescriptor.EMPTY, false).get(); |
| 82 | + // create somne none partitioned log table. |
| 83 | + for (int i = 0; i < 6; i++) { |
| 84 | + long tableId = |
| 85 | + createTable( |
| 86 | + new TablePath(dbName, "test-rebalance_table-" + i), |
| 87 | + DATA1_TABLE_DESCRIPTOR, |
| 88 | + false); |
| 89 | + FLUSS_CLUSTER_EXTENSION.waitUntilTableReady(tableId); |
| 90 | + } |
| 91 | + |
| 92 | + // create some partitioned table with partition. |
| 93 | + TableDescriptor descriptor = |
| 94 | + TableDescriptor.builder() |
| 95 | + .schema(DATA1_SCHEMA) |
| 96 | + .distributedBy(3) |
| 97 | + .partitionedBy("b") |
| 98 | + .build(); |
| 99 | + for (int i = 0; i < 3; i++) { |
| 100 | + TablePath tablePath = new TablePath(dbName, "test-rebalance_partitioned_table-" + i); |
| 101 | + long tableId = createTable(tablePath, descriptor, false); |
| 102 | + for (int j = 0; j < 2; j++) { |
| 103 | + PartitionSpec partitionSpec = |
| 104 | + new PartitionSpec(Collections.singletonMap("b", String.valueOf(j))); |
| 105 | + admin.createPartition(tablePath, partitionSpec, false).get(); |
| 106 | + long partitionId = |
| 107 | + admin.listPartitionInfos(tablePath, partitionSpec) |
| 108 | + .get() |
| 109 | + .get(0) |
| 110 | + .getPartitionId(); |
| 111 | + FLUSS_CLUSTER_EXTENSION.waitUntilTablePartitionReady(tableId, partitionId); |
| 112 | + } |
| 113 | + } |
| 114 | + |
| 115 | + // verify before rebalance. As we use unbalance assignment, all replicas will be location on |
| 116 | + // servers [0,1,2], all leader will be location on server 0. |
| 117 | + for (int i = 0; i < 3; i++) { |
| 118 | + ReplicaManager replicaManager = |
| 119 | + FLUSS_CLUSTER_EXTENSION.getTabletServerById(i).getReplicaManager(); |
| 120 | + assertThat(replicaManager.onlineReplicas().count()).isEqualTo(36); |
| 121 | + if (i == 0) { |
| 122 | + assertThat(replicaManager.leaderCount()).isEqualTo(36); |
| 123 | + } else { |
| 124 | + assertThat(replicaManager.leaderCount()).isEqualTo(0); |
| 125 | + } |
| 126 | + } |
| 127 | + ReplicaManager replicaManager3 = |
| 128 | + FLUSS_CLUSTER_EXTENSION.getTabletServerById(3).getReplicaManager(); |
| 129 | + assertThat(replicaManager3.onlineReplicas().count()).isEqualTo(0); |
| 130 | + assertThat(replicaManager3.leaderCount()).isEqualTo(0); |
| 131 | + |
| 132 | + // trigger rebalance with goal set[ReplicaDistributionGoal, LeaderReplicaDistributionGoal] |
| 133 | + admin.rebalance( |
| 134 | + Arrays.asList( |
| 135 | + GoalType.REPLICA_DISTRIBUTION_GOAL, |
| 136 | + GoalType.LEADER_REPLICA_DISTRIBUTION_GOAL), |
| 137 | + false) |
| 138 | + .get(); |
| 139 | + |
| 140 | + retry( |
| 141 | + Duration.ofMinutes(2), |
| 142 | + () -> { |
| 143 | + // TODO use admin#listRebalanceProcess to verify rebalance is finished. |
| 144 | + assertThat(FLUSS_CLUSTER_EXTENSION.getZooKeeperClient().getRebalancePlan()) |
| 145 | + .isNotPresent(); |
| 146 | + for (int i = 0; i < 4; i++) { |
| 147 | + ReplicaManager replicaManager = |
| 148 | + FLUSS_CLUSTER_EXTENSION.getTabletServerById(i).getReplicaManager(); |
| 149 | + // average will be 27 |
| 150 | + assertThat(replicaManager.onlineReplicas().count()).isBetween(24L, 30L); |
| 151 | + long leaderCount = replicaManager.leaderCount(); |
| 152 | + // average will be 9 |
| 153 | + assertThat(leaderCount).isBetween(7L, 11L); |
| 154 | + } |
| 155 | + }); |
| 156 | + |
| 157 | + // add server tag PERMANENT_OFFLINE for server 3, trigger all leader and replica removed |
| 158 | + // from server 3. |
| 159 | + admin.addServerTag(Collections.singletonList(3), ServerTag.PERMANENT_OFFLINE).get(); |
| 160 | + admin.rebalance( |
| 161 | + Arrays.asList( |
| 162 | + GoalType.REPLICA_DISTRIBUTION_GOAL, |
| 163 | + GoalType.LEADER_REPLICA_DISTRIBUTION_GOAL), |
| 164 | + false) |
| 165 | + .get(); |
| 166 | + retry( |
| 167 | + Duration.ofMinutes(2), |
| 168 | + () -> { |
| 169 | + // TODO use admin#listRebalanceProcess to verify rebalance is finished. |
| 170 | + assertThat(FLUSS_CLUSTER_EXTENSION.getZooKeeperClient().getRebalancePlan()) |
| 171 | + .isNotPresent(); |
| 172 | + assertThat(replicaManager3.onlineReplicas().count()).isEqualTo(0); |
| 173 | + assertThat(replicaManager3.leaderCount()).isEqualTo(0); |
| 174 | + for (int i = 0; i < 3; i++) { |
| 175 | + ReplicaManager replicaManager = |
| 176 | + FLUSS_CLUSTER_EXTENSION.getTabletServerById(i).getReplicaManager(); |
| 177 | + // average will be 36 |
| 178 | + assertThat(replicaManager.onlineReplicas().count()).isBetween(34L, 38L); |
| 179 | + long leaderCount = replicaManager.leaderCount(); |
| 180 | + // average will be 12 |
| 181 | + assertThat(leaderCount).isBetween(10L, 14L); |
| 182 | + } |
| 183 | + }); |
| 184 | + } |
| 185 | + |
| 186 | + private static Configuration initConfig() { |
| 187 | + Configuration configuration = new Configuration(); |
| 188 | + // As we want to test rebalance, we need to set this option to true for generate unbalance |
| 189 | + // buckets location in server. |
| 190 | + configuration.set(ConfigOptions.SERVER_GENERATE_UNBALANCE_ASSIGNMENT_FOR_TEST, true); |
| 191 | + configuration.set(ConfigOptions.DEFAULT_REPLICATION_FACTOR, 3); |
| 192 | + configuration.set(ConfigOptions.DEFAULT_BUCKET_NUMBER, 3); |
| 193 | + return configuration; |
| 194 | + } |
| 195 | + |
| 196 | + private long createTable( |
| 197 | + TablePath tablePath, TableDescriptor tableDescriptor, boolean ignoreIfExists) |
| 198 | + throws Exception { |
| 199 | + admin.createTable(tablePath, tableDescriptor, ignoreIfExists).get(); |
| 200 | + return admin.getTableInfo(tablePath).get().getTableId(); |
| 201 | + } |
| 202 | +} |
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