| package org.apache.helix.integration; |
| |
| /* |
| * 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.Date; |
| import java.util.List; |
| |
| import org.apache.helix.BaseDataAccessor; |
| import org.apache.helix.PropertyKey.Builder; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.zookeeper.datamodel.ZNRecord; |
| import org.apache.helix.common.ZkTestBase; |
| import org.apache.helix.integration.manager.ClusterControllerManager; |
| import org.apache.helix.integration.manager.MockParticipantManager; |
| import org.apache.helix.manager.zk.ZkBaseDataAccessor; |
| import org.apache.helix.tools.ClusterStateVerifier; |
| import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier; |
| import org.apache.helix.tools.ClusterStateVerifier.MasterNbInExtViewVerifier; |
| import org.apache.zookeeper.data.Stat; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| public class TestExternalViewUpdates extends ZkTestBase { |
| @Test |
| public void testExternalViewUpdates() throws Exception { |
| System.out.println("START testExternalViewUpdates at " + new Date(System.currentTimeMillis())); |
| |
| String clusterName = getShortClassName(); |
| int numResource = 10; |
| int numPartition = 1; |
| int numReplica = 1; |
| int numNode = 5; |
| int startPort = 12918; |
| MockParticipantManager[] participants = new MockParticipantManager[numNode]; |
| TestHelper.setupCluster(clusterName, ZK_ADDR, startPort, // participant port |
| "localhost", // participant name prefix |
| "TestDB", // resource name prefix |
| numResource, // resources |
| numPartition, // partitions per resource |
| numNode, // number of nodes |
| numReplica, // replicas |
| "MasterSlave", true); // do rebalance |
| |
| // start participants |
| for (int i = 0; i < numNode; i++) { |
| String instanceName = "localhost_" + (startPort + i); |
| |
| participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName); |
| participants[i].syncStart(); |
| } |
| |
| // start controller after participants to trigger rebalance immediately |
| // after the controller is ready |
| ClusterControllerManager controller = |
| new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0"); |
| controller.syncStart(); |
| |
| boolean result = |
| ClusterStateVerifier |
| .verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR, clusterName)); |
| Assert.assertTrue(result); |
| |
| result = |
| ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, |
| clusterName)); |
| Assert.assertTrue(result); |
| |
| // 10 Resources, 1 partition, 1 replica, so there are at most 10 ZK writes for EV (assume) |
| // worst case that no event is batched in controller. Therefore, EV version should be < 10 |
| Builder keyBuilder = new Builder(clusterName); |
| BaseDataAccessor<ZNRecord> accessor = new ZkBaseDataAccessor<>(_gZkClient); |
| String parentPath = keyBuilder.externalViews().getPath(); |
| List<String> childNames = accessor.getChildNames(parentPath, 0); |
| |
| List<String> paths = new ArrayList<>(); |
| for (String name : childNames) { |
| paths.add(parentPath + "/" + name); |
| } |
| |
| int maxEV = numResource * numPartition * numReplica; |
| for (String path : paths) { |
| Stat stat = accessor.getStat(path, 0); |
| Assert.assertTrue(stat.getVersion() <= maxEV, |
| "ExternalView should be updated at most " + maxEV + " times"); |
| } |
| |
| // clean up |
| controller.syncStop(); |
| for (int i = 0; i < 5; i++) { |
| participants[i].syncStop(); |
| } |
| deleteCluster(clusterName); |
| System.out.println("END testExternalViewUpdates at " + new Date(System.currentTimeMillis())); |
| } |
| } |