Examples with MockParticipantManager org.apache.helix.integration.manager.MockParticipantManager used on opensource projects

Example 76 with MockParticipantManager

use of org.apache.helix.integration.manager.MockParticipantManager in project helix by apache.

the class TestControllerLeadershipChange method testMissingTopStateDurationMonitoring.

@Test
public void testMissingTopStateDurationMonitoring() throws Exception {
    String clusterName = "testCluster-TestControllerLeadershipChange";
    String instanceName = clusterName + "-participant";
    String resourceName = "testResource";
    int numPartition = 1;
    int numReplica = 1;
    String stateModel = "LeaderStandby";
    ObjectName resourceMBeanObjectName = getResourceMonitorObjectName(clusterName, resourceName);
    MBeanServer beanServer = ManagementFactory.getPlatformMBeanServer();
    // Create cluster
    _gSetupTool.addCluster(clusterName, true);
    // Create participant
    _gSetupTool.addInstanceToCluster(clusterName, instanceName);
    MockParticipantManager participant = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
    participant.syncStart();
    // Create controller, since this is the only controller, it will be the leader
    HelixManager manager1 = HelixManagerFactory.getZKHelixManager(clusterName, clusterName + "-manager1", InstanceType.CONTROLLER, ZK_ADDR);
    manager1.connect();
    Assert.assertTrue(manager1.isLeader());
    // Create resource
    _gSetupTool.addResourceToCluster(clusterName, resourceName, numPartition, stateModel, IdealState.RebalanceMode.SEMI_AUTO.name());
    // Rebalance Resource
    _gSetupTool.rebalanceResource(clusterName, resourceName, numReplica);
    // Wait for rebalance
    Thread.sleep(2000);
    // Trigger missing top state in manager1
    participant.syncStop();
    Thread.sleep(2000);
    // Starting manager2
    HelixManager manager2 = HelixManagerFactory.getZKHelixManager(clusterName, clusterName + "-manager2", InstanceType.CONTROLLER, ZK_ADDR);
    manager2.connect();
    Assert.assertFalse(manager2.isLeader());
    // Set leader to manager2
    setLeader(manager2);
    Assert.assertFalse(manager1.isLeader());
    Assert.assertTrue(manager2.isLeader());
    // Make resource top state to come back
    participant = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
    participant.syncStart();
    // Wait for rebalance
    Thread.sleep(2000);
    setLeader(manager1);
    Assert.assertTrue(manager1.isLeader());
    Assert.assertFalse(manager2.isLeader());
    _gSetupTool.rebalanceResource(clusterName, resourceName, numReplica);
    // Wait for manager1 to update
    Thread.sleep(2000);
    // Resource lost top state, and manager1 lost leadership for 4000ms, because manager1 will
    // clean monitoring cache after re-gaining leadership, so max value of hand off duration should
    // not have such a large value
    Assert.assertTrue((long) beanServer.getAttribute(resourceMBeanObjectName, "PartitionTopStateHandoffDurationGauge.Max") < 500);
}

Example 77 with MockParticipantManager

use of org.apache.helix.integration.manager.MockParticipantManager in project helix by apache.

the class TestAutoRebalance method testAutoRebalance.

@Test()
public void testAutoRebalance() throws Exception {
    // kill 1 node
    _participants[0].syncStop();
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ExternalViewBalancedVerifier(_gZkClient, CLUSTER_NAME, TEST_DB));
    Assert.assertTrue(result);
    // add 2 nodes
    for (int i = 0; i < 2; i++) {
        String storageNodeName = PARTICIPANT_PREFIX + "_" + (1000 + i);
        _setupTool.addInstanceToCluster(CLUSTER_NAME, storageNodeName);
        MockParticipantManager participant = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, storageNodeName.replace(':', '_'));
        participant.syncStart();
    }
    Thread.sleep(1000);
    result = ClusterStateVerifier.verifyByZkCallback(new ExternalViewBalancedVerifier(_gZkClient, CLUSTER_NAME, TEST_DB));
    Assert.assertTrue(result);
    result = ClusterStateVerifier.verifyByZkCallback(new ExternalViewBalancedVerifier(_gZkClient, CLUSTER_NAME, db2));
    Assert.assertTrue(result);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();
    ExternalView ev = accessor.getProperty(keyBuilder.externalView(db2));
    Set<String> instancesSet = new HashSet<String>();
    for (String partitionName : ev.getRecord().getMapFields().keySet()) {
        Map<String, String> assignmentMap = ev.getRecord().getMapField(partitionName);
        for (String instance : assignmentMap.keySet()) {
            instancesSet.add(instance);
        }
    }
    Assert.assertEquals(instancesSet.size(), 2);
}

Example 78 with MockParticipantManager

use of org.apache.helix.integration.manager.MockParticipantManager in project helix by apache.

the class TestClusterInMaintenanceModeWhenReachingMaxPartition method beforeClass.

@BeforeClass
public void beforeClass() throws Exception {
    System.out.println("START " + CLASS_NAME + " at " + new Date(System.currentTimeMillis()));
    String namespace = "/" + CLUSTER_NAME;
    if (_gZkClient.exists(namespace)) {
        _gZkClient.deleteRecursively(namespace);
    }
    _gSetupTool.addCluster(CLUSTER_NAME, true);
    for (int i = 0; i < NUM_NODE; i++) {
        String storageNodeName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);
        _gSetupTool.addInstanceToCluster(CLUSTER_NAME, storageNodeName);
        // start dummy participants
        MockParticipantManager participant = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, storageNodeName);
        participant.syncStart();
        _participants.add(participant);
    }
    // start controller
    String controllerName = CONTROLLER_PREFIX + "_0";
    _controller = new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName);
    _controller.syncStart();
    _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR).build();
    enablePersistBestPossibleAssignment(_gZkClient, CLUSTER_NAME, true);
    _dataAccessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor);
}

Example 79 with MockParticipantManager

use of org.apache.helix.integration.manager.MockParticipantManager in project helix by apache.

the class TestClusterInMaintenanceModeWhenReachingOfflineInstancesLimit method beforeClass.

@BeforeClass
public void beforeClass() throws Exception {
    System.out.println("START " + CLASS_NAME + " at " + new Date(System.currentTimeMillis()));
    String namespace = "/" + CLUSTER_NAME;
    if (_gZkClient.exists(namespace)) {
        _gZkClient.deleteRecursively(namespace);
    }
    _gSetupTool.addCluster(CLUSTER_NAME, true);
    for (int i = 0; i < NUM_NODE; i++) {
        String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);
        _gSetupTool.addInstanceToCluster(CLUSTER_NAME, instanceName);
        // start dummy participants
        MockParticipantManager participant = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, instanceName);
        participant.syncStart();
        _participants.add(participant);
    }
    // start controller
    String controllerName = CONTROLLER_PREFIX + "_0";
    _controller = new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName);
    _controller.syncStart();
    _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR).build();
    enablePersistBestPossibleAssignment(_gZkClient, CLUSTER_NAME, true);
    _dataAccessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor);
    ConfigAccessor configAccessor = new ConfigAccessor(_gZkClient);
    ClusterConfig clusterConfig = configAccessor.getClusterConfig(CLUSTER_NAME);
    clusterConfig.setMaxOfflineInstancesAllowed(_maxOfflineInstancesAllowed);
    configAccessor.setClusterConfig(CLUSTER_NAME, clusterConfig);
    for (int i = 0; i < 3; i++) {
        String db = "Test-DB-" + i++;
        createResourceWithDelayedRebalance(CLUSTER_NAME, db, BuiltInStateModelDefinitions.MasterSlave.name(), _PARTITIONS, 3, 3, -1);
    }
    Thread.sleep(100);
    Assert.assertTrue(_clusterVerifier.verify());
}

Example 80 with MockParticipantManager

use of org.apache.helix.integration.manager.MockParticipantManager in project helix by apache.

the class TestFullAutoNodeTagging method testUntag.

@Test
public void testUntag() throws Exception {
    final int NUM_PARTICIPANTS = 2;
    final int NUM_PARTITIONS = 4;
    final int NUM_REPLICAS = 1;
    final String RESOURCE_NAME = "TestResource0";
    final String TAG = "ASSIGNABLE";
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    final String clusterName = className + "_" + methodName;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    // Set up cluster
    // participant port
    TestHelper.setupCluster(// participant port
    clusterName, // participant port
    ZK_ADDR, // participant port
    12918, // participant name prefix
    "localhost", // resource name prefix
    "TestResource", // resources
    1, // partitions per resource
    NUM_PARTITIONS, // number of nodes
    NUM_PARTICIPANTS, // replicas
    NUM_REPLICAS, // use FULL_AUTO mode to test node tagging
    "OnlineOffline", // use FULL_AUTO mode to test node tagging
    RebalanceMode.FULL_AUTO, // do rebalance
    true);
    // Tag the resource
    final HelixAdmin helixAdmin = new ZKHelixAdmin(_gZkClient);
    IdealState idealState = helixAdmin.getResourceIdealState(clusterName, RESOURCE_NAME);
    idealState.setInstanceGroupTag(TAG);
    helixAdmin.setResourceIdealState(clusterName, RESOURCE_NAME, idealState);
    // Get a data accessor
    final HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    final PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    // Tag the participants
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
        final String instanceName = "localhost_" + (12918 + i);
        helixAdmin.addInstanceTag(clusterName, instanceName, TAG);
    }
    // Start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller");
    controller.syncStart();
    // Start participants
    MockParticipantManager[] participants = new MockParticipantManager[NUM_PARTICIPANTS];
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
        final String instanceName = "localhost_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        participants[i].syncStart();
    }
    // Verify that there are NUM_PARTITIONS partitions in the external view, each having
    // NUM_REPLICAS replicas, where all assigned replicas are to tagged nodes, and they are all
    // ONLINE.
    Verifier v = new Verifier() {

        @Override
        public boolean verify() throws Exception {
            ExternalView externalView = pollForProperty(ExternalView.class, accessor, keyBuilder.externalView(RESOURCE_NAME), true);
            if (externalView == null) {
                return false;
            }
            Set<String> taggedInstances = Sets.newHashSet(helixAdmin.getInstancesInClusterWithTag(clusterName, TAG));
            Set<String> partitionSet = externalView.getPartitionSet();
            if (partitionSet.size() != NUM_PARTITIONS) {
                return false;
            }
            for (String partitionName : partitionSet) {
                Map<String, String> stateMap = externalView.getStateMap(partitionName);
                if (stateMap.size() != NUM_REPLICAS) {
                    return false;
                }
                for (String participantName : stateMap.keySet()) {
                    if (!taggedInstances.contains(participantName)) {
                        return false;
                    }
                    String state = stateMap.get(participantName);
                    if (!state.equalsIgnoreCase("ONLINE")) {
                        return false;
                    }
                }
            }
            return true;
        }
    };
    // Run the verifier for both nodes tagged
    boolean initialResult = TestHelper.verify(v, 10 * 1000);
    Assert.assertTrue(initialResult);
    // Untag a node
    helixAdmin.removeInstanceTag(clusterName, "localhost_12918", TAG);
    // Verify again
    boolean finalResult = TestHelper.verify(v, 10 * 1000);
    Assert.assertTrue(finalResult);
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}