| package org.apache.helix.integration.rebalancer.WagedRebalancer; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.google.common.collect.ImmutableMap; |
| import org.apache.helix.ConfigAccessor; |
| import org.apache.helix.HelixDataAccessor; |
| import org.apache.helix.HelixException; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.common.ZkTestBase; |
| import org.apache.helix.constants.InstanceConstants; |
| import org.apache.helix.controller.rebalancer.strategy.CrushEdRebalanceStrategy; |
| import org.apache.helix.controller.rebalancer.strategy.CrushRebalanceStrategy; |
| import org.apache.helix.controller.rebalancer.util.RebalanceScheduler; |
| import org.apache.helix.controller.rebalancer.waged.AssignmentMetadataStore; |
| import org.apache.helix.integration.manager.ClusterControllerManager; |
| import org.apache.helix.integration.manager.MockParticipantManager; |
| import org.apache.helix.manager.zk.ZKHelixDataAccessor; |
| import org.apache.helix.manager.zk.ZkBucketDataAccessor; |
| import org.apache.helix.model.BuiltInStateModelDefinitions; |
| import org.apache.helix.model.ClusterConfig; |
| import org.apache.helix.model.ExternalView; |
| import org.apache.helix.model.IdealState; |
| import org.apache.helix.model.InstanceConfig; |
| import org.apache.helix.model.ResourceAssignment; |
| import org.apache.helix.model.ResourceConfig; |
| import org.apache.helix.model.StateModelDefinition; |
| import org.apache.helix.tools.ClusterVerifiers.HelixClusterVerifier; |
| import org.apache.helix.tools.ClusterVerifiers.StrictMatchExternalViewVerifier; |
| import org.apache.helix.tools.ClusterVerifiers.ZkHelixClusterVerifier; |
| import org.apache.helix.util.HelixUtil; |
| import org.testng.Assert; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.AfterMethod; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| |
| public class TestWagedRebalance extends ZkTestBase { |
| protected final int NUM_NODE = 6; |
| protected static final int START_PORT = 12918; |
| protected static final int PARTITIONS = 20; |
| protected static final int TAGS = 2; |
| |
| protected final String CLASS_NAME = getShortClassName(); |
| protected final String CLUSTER_NAME = CLUSTER_PREFIX + "_" + CLASS_NAME; |
| protected ClusterControllerManager _controller; |
| protected AssignmentMetadataStore _assignmentMetadataStore; |
| |
| List<MockParticipantManager> _participants = new ArrayList<>(); |
| Map<String, String> _nodeToTagMap = new HashMap<>(); |
| List<String> _nodes = new ArrayList<>(); |
| private Set<String> _allDBs = new HashSet<>(); |
| private int _replica = 3; |
| |
| private static String[] _testModels = { |
| BuiltInStateModelDefinitions.OnlineOffline.name(), |
| BuiltInStateModelDefinitions.MasterSlave.name(), |
| BuiltInStateModelDefinitions.LeaderStandby.name() |
| }; |
| |
| @BeforeClass |
| public void beforeClass() throws Exception { |
| System.out.println("START " + CLASS_NAME + " at " + new Date(System.currentTimeMillis())); |
| |
| _gSetupTool.addCluster(CLUSTER_NAME, true); |
| |
| for (int i = 0; i < NUM_NODE; i++) { |
| String storageNodeName = PARTICIPANT_PREFIX + "_" + (START_PORT + i); |
| addInstanceConfig(storageNodeName, i, TAGS); |
| } |
| |
| // start dummy participants |
| for (String node : _nodes) { |
| MockParticipantManager participant = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, node); |
| participant.syncStart(); |
| _participants.add(participant); |
| } |
| |
| // start controller |
| String controllerName = CONTROLLER_PREFIX + "_0"; |
| _controller = new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName); |
| _controller.syncStart(); |
| |
| enablePersistBestPossibleAssignment(_gZkClient, CLUSTER_NAME, true); |
| |
| // It's a hacky way to workaround the package restriction. Note that we still want to hide the |
| // AssignmentMetadataStore constructor to prevent unexpected update to the assignment records. |
| _assignmentMetadataStore = |
| new AssignmentMetadataStore(new ZkBucketDataAccessor(ZK_ADDR), CLUSTER_NAME) { |
| public Map<String, ResourceAssignment> getBaseline() { |
| // Ensure this metadata store always read from the ZK without using cache. |
| super.reset(); |
| return super.getBaseline(); |
| } |
| |
| public synchronized Map<String, ResourceAssignment> getBestPossibleAssignment() { |
| // Ensure this metadata store always read from the ZK without using cache. |
| super.reset(); |
| return super.getBestPossibleAssignment(); |
| } |
| }; |
| |
| // Set test instance capacity and partition weights |
| HelixDataAccessor dataAccessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor); |
| ClusterConfig clusterConfig = |
| dataAccessor.getProperty(dataAccessor.keyBuilder().clusterConfig()); |
| String testCapacityKey = "TestCapacityKey"; |
| clusterConfig.setInstanceCapacityKeys(Collections.singletonList(testCapacityKey)); |
| clusterConfig.setDefaultInstanceCapacityMap(Collections.singletonMap(testCapacityKey, 100)); |
| clusterConfig.setDefaultPartitionWeightMap(Collections.singletonMap(testCapacityKey, 1)); |
| dataAccessor.setProperty(dataAccessor.keyBuilder().clusterConfig(), clusterConfig); |
| } |
| |
| protected void addInstanceConfig(String storageNodeName, int seqNo, int tagCount) { |
| _gSetupTool.addInstanceToCluster(CLUSTER_NAME, storageNodeName); |
| String tag = "tag-" + seqNo % tagCount; |
| _gSetupTool.getClusterManagementTool().addInstanceTag(CLUSTER_NAME, storageNodeName, tag); |
| _nodeToTagMap.put(storageNodeName, tag); |
| _nodes.add(storageNodeName); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| |
| validate(_replica); |
| |
| // Adding 3 more resources |
| i = 0; |
| for (String stateModel : _testModels) { |
| String moreDB = "More-Test-DB-" + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, moreDB, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, moreDB, _replica); |
| _allDBs.add(moreDB); |
| |
| validate(_replica); |
| } |
| |
| // Drop the 3 additional resources |
| for (int j = 0; j < 3; j++) { |
| String moreDB = "More-Test-DB-" + j++; |
| _gSetupTool.dropResourceFromCluster(CLUSTER_NAME, moreDB); |
| _allDBs.remove(moreDB); |
| |
| validate(_replica); |
| } |
| } |
| |
| /** |
| * Use HelixUtil.getIdealAssignmentForWagedFullAuto() to compute the cluster-wide assignment and |
| * verify that it matches with the result from the original WAGED rebalancer's algorithm result. |
| */ |
| @Test(dependsOnMethods = "test") |
| public void testRebalanceTool() throws InterruptedException { |
| // Create resources for testing |
| // It is important to let controller to use sync mode the same as getTargetAssignmentForWagedFullAuto |
| // to make the test correct and stable. |
| HelixDataAccessor dataAccessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor); |
| ClusterConfig clusterConfigGlobal = |
| dataAccessor.getProperty(dataAccessor.keyBuilder().clusterConfig()); |
| clusterConfigGlobal.setGlobalRebalanceAsyncMode(false); |
| dataAccessor.setProperty(dataAccessor.keyBuilder().clusterConfig(), clusterConfigGlobal); |
| try { |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| |
| validate(_replica); |
| |
| // Read cluster parameters from ZK |
| dataAccessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor); |
| ClusterConfig clusterConfig = dataAccessor.getProperty(dataAccessor.keyBuilder().clusterConfig()); |
| List<InstanceConfig> instanceConfigs = dataAccessor.getChildValues(dataAccessor.keyBuilder().instanceConfigs(), true); |
| List<String> liveInstances = dataAccessor.getChildNames(dataAccessor.keyBuilder().liveInstances()); |
| List<IdealState> idealStates = dataAccessor.getChildValues(dataAccessor.keyBuilder().idealStates(), true); |
| List<ResourceConfig> resourceConfigs = dataAccessor.getChildValues(dataAccessor.keyBuilder().resourceConfigs(), true); |
| |
| // Verify that utilResult contains the assignment for the resources added |
| Map<String, ResourceAssignment> utilResult = HelixUtil |
| .getTargetAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| Assert.assertNotNull(utilResult); |
| Assert.assertEquals(utilResult.size(), idealStates.size()); |
| for (IdealState idealState : idealStates) { |
| Assert.assertTrue(utilResult.containsKey(idealState.getResourceName())); |
| StateModelDefinition stateModelDefinition = |
| BuiltInStateModelDefinitions.valueOf(idealState.getStateModelDefRef()).getStateModelDefinition(); |
| for (String partition : idealState.getPartitionSet()) { |
| Assert.assertEquals(utilResult.get(idealState.getResourceName()).getRecord().getMapField(partition), |
| HelixUtil.computeIdealMapping(idealState.getPreferenceList(partition), |
| stateModelDefinition, new HashSet<>(liveInstances))); |
| } |
| } |
| |
| // Verify that the partition state mapping mode also works |
| Map<String, ResourceAssignment> paritionMappingBasedResult = HelixUtil |
| .getImmediateAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| Assert.assertNotNull(paritionMappingBasedResult); |
| Assert.assertEquals(paritionMappingBasedResult.size(), idealStates.size()); |
| for (IdealState idealState : idealStates) { |
| Assert.assertTrue(paritionMappingBasedResult.containsKey(idealState.getResourceName())); |
| Assert.assertEquals( |
| paritionMappingBasedResult.get(idealState.getResourceName()).getRecord().getMapFields(), |
| idealState.getRecord().getMapFields()); |
| } |
| |
| // Try to add a few extra instances |
| String instance_0 = "instance_0"; |
| String instance_1 = "instance_1"; |
| Set<String> newInstances = new HashSet<>(); |
| newInstances.add(instance_0); |
| newInstances.add(instance_1); |
| liveInstances.addAll(newInstances); |
| for (String instance : newInstances) { |
| InstanceConfig instanceConfig = new InstanceConfig(instance); |
| instanceConfigs.add(instanceConfig); |
| } |
| |
| utilResult = HelixUtil |
| .getTargetAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| |
| Set<String> instancesWithAssignments = new HashSet<>(); |
| utilResult.values().forEach( |
| resourceAssignment -> resourceAssignment.getRecord().getMapFields().values().forEach(entry -> instancesWithAssignments.addAll(entry.keySet()))); |
| // The newly added instances should contain some partitions |
| Assert.assertTrue(instancesWithAssignments.contains(instance_0)); |
| Assert.assertTrue(instancesWithAssignments.contains(instance_1)); |
| |
| // Perform the same test with immediate assignment |
| utilResult = HelixUtil |
| .getImmediateAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| Set<String> instancesWithAssignmentsImmediate = new HashSet<>(); |
| utilResult.values().forEach( |
| resourceAssignment -> resourceAssignment.getRecord().getMapFields().values().forEach(entry -> instancesWithAssignmentsImmediate.addAll(entry.keySet()))); |
| // The newly added instances should contain some partitions |
| Assert.assertTrue(instancesWithAssignmentsImmediate.contains(instance_0)); |
| Assert.assertTrue(instancesWithAssignmentsImmediate.contains(instance_1)); |
| |
| // Force FAILED_TO_CALCULATE and ensure that both util functions return no mappings |
| String testCapacityKey = "key"; |
| clusterConfig.setDefaultPartitionWeightMap(Collections.singletonMap(testCapacityKey, 2)); |
| clusterConfig.setDefaultInstanceCapacityMap(Collections.singletonMap(testCapacityKey, 1)); |
| clusterConfig.setInstanceCapacityKeys(Collections.singletonList(testCapacityKey)); |
| try { |
| HelixUtil.getTargetAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| Assert.fail("Expected HelixException for calculaation failure"); |
| } catch (HelixException e) { |
| Assert.assertEquals(e.getMessage(), |
| "getIdealAssignmentForWagedFullAuto(): Calculation failed: Failed to compute BestPossibleState!"); |
| } |
| |
| try { |
| HelixUtil.getImmediateAssignmentForWagedFullAuto(ZK_ADDR, clusterConfig, instanceConfigs, |
| liveInstances, idealStates, resourceConfigs); |
| Assert.fail("Expected HelixException for calculaation failure"); |
| } catch (HelixException e) { |
| Assert.assertEquals(e.getMessage(), |
| "getIdealAssignmentForWagedFullAuto(): Calculation failed: Failed to compute BestPossibleState!"); |
| } |
| } finally { |
| // restore the config with async mode |
| clusterConfigGlobal = |
| dataAccessor.getProperty(dataAccessor.keyBuilder().clusterConfig()); |
| clusterConfigGlobal.setGlobalRebalanceAsyncMode(true); |
| dataAccessor.setProperty(dataAccessor.keyBuilder().clusterConfig(), clusterConfigGlobal); |
| } |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testWithInstanceTag() throws Exception { |
| Set<String> tags = new HashSet<String>(_nodeToTagMap.values()); |
| int i = 3; |
| for (String tag : tags) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, |
| BuiltInStateModelDefinitions.MasterSlave.name(), PARTITIONS, _replica, _replica); |
| IdealState is = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, db); |
| is.setInstanceGroupTag(tag); |
| _gSetupTool.getClusterManagementTool().setResourceIdealState(CLUSTER_NAME, db, is); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| validate(_replica); |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testChangeIdealState() throws InterruptedException { |
| String dbName = "Test-DB-" + TestHelper.getTestMethodName(); |
| createResourceWithWagedRebalance(CLUSTER_NAME, dbName, |
| BuiltInStateModelDefinitions.MasterSlave.name(), PARTITIONS, _replica, _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, dbName, _replica); |
| _allDBs.add(dbName); |
| |
| validate(_replica); |
| |
| // Adjust the replica count |
| IdealState is = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, dbName); |
| int newReplicaFactor = _replica - 1; |
| is.setReplicas("" + newReplicaFactor); |
| _gSetupTool.getClusterManagementTool().setResourceIdealState(CLUSTER_NAME, dbName, is); |
| |
| validate(newReplicaFactor); |
| |
| // Adjust the partition list |
| is = _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, dbName); |
| is.setNumPartitions(PARTITIONS + 1); |
| _gSetupTool.getClusterManagementTool().setResourceIdealState(CLUSTER_NAME, dbName, is); |
| _gSetupTool.getClusterManagementTool().rebalance(CLUSTER_NAME, dbName, newReplicaFactor); |
| |
| validate(newReplicaFactor); |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, dbName); |
| Assert.assertEquals(ev.getPartitionSet().size(), PARTITIONS + 1); |
| |
| // Customize the partition list instead of calling rebalance. |
| // So there is no other changes in the IdealState. The rebalancer shall still trigger |
| // new baseline calculation in this case. |
| is = _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, dbName); |
| is.setPreferenceList(dbName + "_customizedPartition", Collections.EMPTY_LIST); |
| _gSetupTool.getClusterManagementTool().setResourceIdealState(CLUSTER_NAME, dbName, is); |
| |
| validate(newReplicaFactor); |
| ev = _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, dbName); |
| Assert.assertEquals(ev.getPartitionSet().size(), PARTITIONS + 2); |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testDisableInstance() throws InterruptedException { |
| String dbName = "Test-DB-" + TestHelper.getTestMethodName(); |
| createResourceWithWagedRebalance(CLUSTER_NAME, dbName, |
| BuiltInStateModelDefinitions.MasterSlave.name(), PARTITIONS, _replica, _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, dbName, _replica); |
| _allDBs.add(dbName); |
| |
| validate(_replica); |
| |
| // Disable participants, keep only three left |
| Set<String> disableParticipants = new HashSet<>(); |
| |
| try { |
| for (int i = 3; i < _participants.size(); i++) { |
| MockParticipantManager p = _participants.get(i); |
| disableParticipants.add(p.getInstanceName()); |
| InstanceConfig config = _gSetupTool.getClusterManagementTool() |
| .getInstanceConfig(CLUSTER_NAME, p.getInstanceName()); |
| config.setInstanceOperation(InstanceConstants.InstanceOperation.DISABLE); |
| _gSetupTool.getClusterManagementTool() |
| .setInstanceConfig(CLUSTER_NAME, p.getInstanceName(), config); |
| } |
| |
| validate(_replica); |
| |
| // Verify there is no assignment on the disabled participants. |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, dbName); |
| for (String partition : ev.getPartitionSet()) { |
| Map<String, String> replicaStateMap = ev.getStateMap(partition); |
| for (String instance : replicaStateMap.keySet()) { |
| Assert.assertFalse(disableParticipants.contains(instance)); |
| } |
| } |
| } finally { |
| // recover the config |
| for (String instanceName : disableParticipants) { |
| InstanceConfig config = |
| _gSetupTool.getClusterManagementTool().getInstanceConfig(CLUSTER_NAME, instanceName); |
| config.setInstanceOperation(InstanceConstants.InstanceOperation.ENABLE); |
| _gSetupTool.getClusterManagementTool() |
| .setInstanceConfig(CLUSTER_NAME, instanceName, config); |
| } |
| } |
| } |
| |
| @Test(dependsOnMethods = "testDisableInstance") |
| public void testLackEnoughLiveInstances() throws Exception { |
| // shutdown participants, keep only two left |
| for (int i = 2; i < _participants.size(); i++) { |
| _participants.get(i).syncStop(); |
| } |
| |
| int j = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + j++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| |
| // Verify if the partitions get assigned |
| validate(2); |
| |
| // restart the participants within the zone |
| for (int i = 2; i < _participants.size(); i++) { |
| MockParticipantManager p = _participants.get(i); |
| MockParticipantManager newNode = |
| new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, p.getInstanceName()); |
| _participants.set(i, newNode); |
| newNode.syncStart(); |
| } |
| |
| // Verify if the partitions get assigned |
| validate(_replica); |
| } |
| |
| @Test(dependsOnMethods = "testDisableInstance") |
| public void testLackEnoughInstances() throws Exception { |
| // shutdown participants, keep only two left |
| for (int i = 2; i < _participants.size(); i++) { |
| MockParticipantManager p = _participants.get(i); |
| p.syncStop(); |
| _gSetupTool.getClusterManagementTool() |
| .enableInstance(CLUSTER_NAME, p.getInstanceName(), false); |
| _gSetupTool.dropInstanceFromCluster(CLUSTER_NAME, p.getInstanceName()); |
| } |
| |
| int j = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + j++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| |
| // Verify if the partitions get assigned |
| validate(2); |
| |
| // Create new participants within the zone |
| for (int i = 2; i < _participants.size(); i++) { |
| MockParticipantManager p = _participants.get(i); |
| String replaceNodeName = p.getInstanceName() + "-replacement_" + START_PORT; |
| addInstanceConfig(replaceNodeName, i, TAGS); |
| MockParticipantManager newNode = |
| new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, replaceNodeName); |
| _participants.set(i, newNode); |
| newNode.syncStart(); |
| } |
| |
| // Verify if the partitions get assigned |
| validate(_replica); |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testMixedRebalancerUsage() throws InterruptedException { |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| if (i == 0) { |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, db, PARTITIONS, stateModel, |
| IdealState.RebalanceMode.FULL_AUTO + "", CrushRebalanceStrategy.class.getName()); |
| } else if (i == 1) { |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, db, PARTITIONS, stateModel, |
| IdealState.RebalanceMode.FULL_AUTO + "", CrushEdRebalanceStrategy.class.getName()); |
| } else { |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| } |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| validate(_replica); |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testMaxPartitionLimitation() throws Exception { |
| ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient); |
| ClusterConfig clusterConfig = configAccessor.getClusterConfig(CLUSTER_NAME); |
| // Change the cluster level config so no assignment can be done |
| clusterConfig.setMaxPartitionsPerInstance(1); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| try { |
| String limitedResourceName = null; |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| if (i == 1) { |
| // The limited resource has additional limitation. |
| // The other resources could have been assigned in theory if the WAGED rebalancer were |
| // not used. |
| // However, with the WAGED rebalancer, this restricted resource will block the other ones. |
| limitedResourceName = db; |
| IdealState idealState = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, db); |
| idealState.setMaxPartitionsPerInstance(1); |
| _gSetupTool.getClusterManagementTool() |
| .setResourceIdealState(CLUSTER_NAME, db, idealState); |
| } |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| Thread.sleep(300); |
| |
| // Since the WAGED rebalancer need to finish rebalancing every resources, the initial |
| // assignment won't show. |
| Assert.assertFalse(TestHelper.verify(() -> _allDBs.stream().anyMatch(db -> { |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, db); |
| return ev != null && !ev.getPartitionSet().isEmpty(); |
| }), 2000)); |
| |
| // Remove the cluster level limitation |
| clusterConfig.setMaxPartitionsPerInstance(-1); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| Thread.sleep(300); |
| |
| // Since the WAGED rebalancer need to finish rebalancing every resources, the assignment won't |
| // show even removed cluster level restriction |
| Assert.assertFalse(TestHelper.verify(() -> _allDBs.stream().anyMatch(db -> { |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, db); |
| return ev != null && !ev.getPartitionSet().isEmpty(); |
| }), 2000)); |
| |
| // Remove the resource level limitation |
| IdealState idealState = _gSetupTool.getClusterManagementTool() |
| .getResourceIdealState(CLUSTER_NAME, limitedResourceName); |
| idealState.setMaxPartitionsPerInstance(Integer.MAX_VALUE); |
| _gSetupTool.getClusterManagementTool() |
| .setResourceIdealState(CLUSTER_NAME, limitedResourceName, idealState); |
| |
| validate(_replica); |
| } finally { |
| // recover the config change |
| clusterConfig = configAccessor.getClusterConfig(CLUSTER_NAME); |
| clusterConfig.setMaxPartitionsPerInstance(-1); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| } |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testNewInstances() throws InterruptedException { |
| ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient); |
| ClusterConfig clusterConfig = configAccessor.getClusterConfig(CLUSTER_NAME); |
| clusterConfig.setGlobalRebalancePreference(ImmutableMap |
| .of(ClusterConfig.GlobalRebalancePreferenceKey.EVENNESS, 0, |
| ClusterConfig.GlobalRebalancePreferenceKey.LESS_MOVEMENT, 10)); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| validate(_replica); |
| |
| String newNodeName = "newNode-" + TestHelper.getTestMethodName() + "_" + START_PORT; |
| MockParticipantManager participant = |
| new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, newNodeName); |
| try { |
| _gSetupTool.addInstanceToCluster(CLUSTER_NAME, newNodeName); |
| participant.syncStart(); |
| |
| validate(_replica); |
| |
| Assert.assertFalse(_allDBs.stream().anyMatch(db -> { |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, db); |
| for (String partition : ev.getPartitionSet()) { |
| if (ev.getStateMap(partition).containsKey(newNodeName)) { |
| return true; |
| } |
| } |
| return false; |
| })); |
| |
| clusterConfig.setGlobalRebalancePreference(ClusterConfig.DEFAULT_GLOBAL_REBALANCE_PREFERENCE); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| validate(_replica); |
| |
| Assert.assertTrue(_allDBs.stream().anyMatch(db -> { |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, db); |
| for (String partition : ev.getPartitionSet()) { |
| if (ev.getStateMap(partition).containsKey(newNodeName)) { |
| return true; |
| } |
| } |
| return false; |
| })); |
| } finally { |
| if (participant != null && participant.isConnected()) { |
| participant.syncStop(); |
| } |
| } |
| } |
| |
| /** |
| * The stateful WAGED rebalancer will be reset while the controller regains the leadership. |
| * This test is to verify if the reset has been done and the rebalancer has forgotten any previous |
| * status after leadership switched. |
| */ |
| @Test(dependsOnMethods = "test") |
| public void testRebalancerReset() throws Exception { |
| // Configure the rebalance preference so as to trigger more partition movements for evenness. |
| // This is to ensure the controller will try to move something if the rebalancer has been reset. |
| ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient); |
| ClusterConfig clusterConfig = configAccessor.getClusterConfig(CLUSTER_NAME); |
| clusterConfig.setGlobalRebalancePreference(ImmutableMap |
| .of(ClusterConfig.GlobalRebalancePreferenceKey.EVENNESS, 10, |
| ClusterConfig.GlobalRebalancePreferenceKey.LESS_MOVEMENT, 0)); |
| configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig); |
| |
| int i = 0; |
| for (String stateModel : _testModels) { |
| String db = "Test-DB-" + TestHelper.getTestMethodName() + i++; |
| createResourceWithWagedRebalance(CLUSTER_NAME, db, stateModel, PARTITIONS, _replica, |
| _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db, _replica); |
| _allDBs.add(db); |
| } |
| validate(_replica); |
| |
| // Adding one more resource. Since it is added after the other resources, the assignment is |
| // impacted because of the other resources' assignment. |
| String moreDB = "More-Test-DB"; |
| createResourceWithWagedRebalance(CLUSTER_NAME, moreDB, |
| BuiltInStateModelDefinitions.MasterSlave.name(), PARTITIONS, _replica, _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, moreDB, _replica); |
| _allDBs.add(moreDB); |
| validate(_replica); |
| ExternalView oldEV = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, moreDB); |
| |
| _controller.handleNewSession(); |
| // Trigger a rebalance to test if the rebalancer calculate with empty cache states. |
| RebalanceScheduler.invokeRebalance(_controller.getHelixDataAccessor(), moreDB); |
| |
| // After reset done, the rebalancer will try to rebalance all the partitions since it has |
| // forgotten the previous state. |
| validate(_replica); |
| ExternalView newEV = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, moreDB); |
| |
| // To verify that the controller has moved some partitions. |
| Assert.assertFalse(newEV.equals(oldEV)); |
| } |
| |
| @Test(dependsOnMethods = "test") |
| public void testRecreateSameResource() throws InterruptedException { |
| String dbName = "Test-DB-" + TestHelper.getTestMethodName(); |
| createResourceWithWagedRebalance(CLUSTER_NAME, dbName, |
| BuiltInStateModelDefinitions.MasterSlave.name(), PARTITIONS, _replica, _replica); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, dbName, _replica); |
| _allDBs.add(dbName); |
| // waiting for the DBs being dropped. |
| validate(_replica); |
| |
| // Record the current Ideal State and Resource Config for recreating. |
| IdealState is = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, dbName); |
| |
| // Drop preserved the DB. |
| _gSetupTool.dropResourceFromCluster(CLUSTER_NAME, dbName); |
| _allDBs.remove(dbName); |
| // waiting for the DBs being dropped. |
| validate(_replica); |
| |
| // Recreate the DB. |
| _gSetupTool.getClusterManagementTool().addResource(CLUSTER_NAME, dbName, is); |
| _allDBs.add(dbName); |
| // waiting for the DBs to be recreated. |
| validate(_replica); |
| } |
| |
| private void validate(int expectedReplica) { |
| HelixClusterVerifier _clusterVerifier = |
| new StrictMatchExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR) |
| .setDeactivatedNodeAwareness(true).setResources(_allDBs) |
| .setWaitTillVerify(TestHelper.DEFAULT_REBALANCE_PROCESSING_WAIT_TIME) |
| .build(); |
| try { |
| Assert.assertTrue(_clusterVerifier.verify(5000)); |
| } finally { |
| _clusterVerifier.close(); |
| } |
| for (String db : _allDBs) { |
| IdealState is = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, db); |
| ExternalView ev = |
| _gSetupTool.getClusterManagementTool().getResourceExternalView(CLUSTER_NAME, db); |
| validateIsolation(is, ev, expectedReplica); |
| } |
| } |
| |
| /** |
| * Validate each partition is different instances and with necessary tagged instances. |
| */ |
| private void validateIsolation(IdealState is, ExternalView ev, int expectedReplica) { |
| String tag = is.getInstanceGroupTag(); |
| for (String partition : is.getPartitionSet()) { |
| Map<String, String> assignmentMap = ev.getRecord().getMapField(partition); |
| Set<String> instancesInEV = assignmentMap.keySet(); |
| Assert.assertEquals(instancesInEV.size(), expectedReplica); |
| for (String instance : instancesInEV) { |
| if (tag != null) { |
| InstanceConfig config = |
| _gSetupTool.getClusterManagementTool().getInstanceConfig(CLUSTER_NAME, instance); |
| Assert.assertTrue(config.containsTag(tag)); |
| } |
| } |
| } |
| } |
| |
| @AfterMethod |
| public void afterMethod() throws Exception { |
| for (String db : _allDBs) { |
| _gSetupTool.dropResourceFromCluster(CLUSTER_NAME, db); |
| } |
| // waiting for all DB be dropped. |
| ZkHelixClusterVerifier _clusterVerifier = |
| new StrictMatchExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR) |
| .setDeactivatedNodeAwareness(true).setResources(_allDBs) |
| .setWaitTillVerify(TestHelper.DEFAULT_REBALANCE_PROCESSING_WAIT_TIME) |
| .build(); |
| try { |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| _allDBs.clear(); |
| } finally { |
| _clusterVerifier.close(); |
| } |
| |
| // Verify the DBs are all removed and the persisted assignment records are cleaned up. |
| Assert.assertEquals( |
| _gSetupTool.getClusterManagementTool().getResourcesInCluster(CLUSTER_NAME).size(), 0); |
| Assert.assertTrue(_assignmentMetadataStore.getBestPossibleAssignment().isEmpty()); |
| Assert.assertTrue(_assignmentMetadataStore.getBaseline().isEmpty()); |
| } |
| |
| @AfterClass |
| public void afterClass() throws Exception { |
| if (_controller != null && _controller.isConnected()) { |
| _controller.syncStop(); |
| } |
| for (MockParticipantManager p : _participants) { |
| if (p != null && p.isConnected()) { |
| p.syncStop(); |
| } |
| } |
| deleteCluster(CLUSTER_NAME); |
| } |
| } |
