Examples with LiveInstance org.apache.helix.model.LiveInstance used on opensource projects

Example 31 with LiveInstance

use of org.apache.helix.model.LiveInstance in project helix by apache.

the class TestDisableCustomCodeRunner method test.

@Test
public void test() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    // participant port
    TestHelper.setupCluster(// participant port
    clusterName, // participant port
    ZK_ADDR, // participant port
    12918, // participant name prefix
    "localhost", // resource name prefix
    "TestDB", // resources
    1, // partitions per resource
    PARTITION_NUM, // number of nodes
    N, // replicas
    2, "MasterSlave", // do rebalance
    true);
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller");
    controller.syncStart();
    // start participants
    Map<String, MockParticipantManager> participants = new HashMap<String, MockParticipantManager>();
    Map<String, HelixCustomCodeRunner> customCodeRunners = new HashMap<String, HelixCustomCodeRunner>();
    Map<String, DummyCallback> callbacks = new HashMap<String, DummyCallback>();
    for (int i = 0; i < N; i++) {
        String instanceName = "localhost_" + (12918 + i);
        participants.put(instanceName, new MockParticipantManager(ZK_ADDR, clusterName, instanceName));
        customCodeRunners.put(instanceName, new HelixCustomCodeRunner(participants.get(instanceName), ZK_ADDR));
        callbacks.put(instanceName, new DummyCallback());
        customCodeRunners.get(instanceName).invoke(callbacks.get(instanceName)).on(ChangeType.LIVE_INSTANCE).usingLeaderStandbyModel("TestParticLeader").start();
        participants.get(instanceName).syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Make sure callback is registered
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    final HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    final String customCodeRunnerResource = customCodeRunners.get("localhost_12918").getResourceName();
    ExternalView extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
    Map<String, String> instanceStates = extView.getStateMap(customCodeRunnerResource + "_0");
    String leader = null;
    for (String instance : instanceStates.keySet()) {
        String state = instanceStates.get(instance);
        if ("LEADER".equals(state)) {
            leader = instance;
            break;
        }
    }
    Assert.assertNotNull(leader);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isInitTypeInvoked());
        } else {
            Assert.assertFalse(callback.isInitTypeInvoked());
        }
        callback.reset();
    }
    // Disable custom-code runner resource
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.enableResource(clusterName, customCodeRunnerResource, false);
    // Verify that states of custom-code runner are all OFFLINE
    result = TestHelper.verify(new TestHelper.Verifier() {

        @Override
        public boolean verify() throws Exception {
            PropertyKey.Builder keyBuilder = accessor.keyBuilder();
            ExternalView extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
            if (extView == null) {
                return false;
            }
            Set<String> partitionSet = extView.getPartitionSet();
            if (partitionSet == null || partitionSet.size() != PARTITION_NUM) {
                return false;
            }
            for (String partition : partitionSet) {
                Map<String, String> instanceStates = extView.getStateMap(partition);
                for (String state : instanceStates.values()) {
                    if (!"OFFLINE".equals(state)) {
                        return false;
                    }
                }
            }
            return true;
        }
    }, 10 * 1000);
    Assert.assertTrue(result);
    // Change live-instance should not invoke any custom-code runner
    LiveInstance fakeInstance = new LiveInstance("fakeInstance");
    fakeInstance.setSessionId("fakeSessionId");
    fakeInstance.setHelixVersion("0.6");
    accessor.setProperty(keyBuilder.liveInstance("fakeInstance"), fakeInstance);
    Thread.sleep(1000);
    for (Map.Entry<String, DummyCallback> e : callbacks.entrySet()) {
        String instance = e.getKey();
        DummyCallback callback = e.getValue();
        Assert.assertFalse(callback.isInitTypeInvoked());
        Assert.assertFalse(callback.isCallbackTypeInvoked());
        // Ensure that we were told that a leader stopped being the leader
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isFinalizeTypeInvoked());
        }
    }
    // Remove fake instance
    accessor.removeProperty(keyBuilder.liveInstance("fakeInstance"));
    // Re-enable custom-code runner
    admin.enableResource(clusterName, customCodeRunnerResource, true);
    result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Verify that custom-invoke is invoked again
    extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
    instanceStates = extView.getStateMap(customCodeRunnerResource + "_0");
    leader = null;
    for (String instance : instanceStates.keySet()) {
        String state = instanceStates.get(instance);
        if ("LEADER".equals(state)) {
            leader = instance;
            break;
        }
    }
    Assert.assertNotNull(leader);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isInitTypeInvoked());
        } else {
            Assert.assertFalse(callback.isInitTypeInvoked());
        }
        callback.reset();
    }
    // Add a fake instance should invoke custom-code runner
    accessor.setProperty(keyBuilder.liveInstance("fakeInstance"), fakeInstance);
    Thread.sleep(1000);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isCallbackTypeInvoked());
        } else {
            Assert.assertFalse(callback.isCallbackTypeInvoked());
        }
    }
    // Clean up
    controller.syncStop();
    for (MockParticipantManager participant : participants.values()) {
        participant.syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 32 with LiveInstance

use of org.apache.helix.model.LiveInstance in project helix by apache.

the class TestDistributedCMMain method testDistributedCMMain.

@Test
public void testDistributedCMMain() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterNamePrefix = className + "_" + methodName;
    final int n = 5;
    final int clusterNb = 10;
    System.out.println("START " + clusterNamePrefix + " at " + new Date(System.currentTimeMillis()));
    // setup 10 clusters
    for (int i = 0; i < clusterNb; i++) {
        String clusterName = clusterNamePrefix + "0_" + i;
        String participantName = "localhost" + i;
        String resourceName = "TestDB" + i;
        // participant port
        TestHelper.setupCluster(// participant port
        clusterName, // participant port
        ZK_ADDR, // participant port
        12918, // participant name prefix
        participantName, // resource name prefix
        resourceName, // resources
        1, // partitions per resource
        8, // number of nodes
        n, // replicas
        3, "MasterSlave", // do rebalance
        true);
    }
    // setup controller cluster
    final String controllerClusterName = "CONTROLLER_" + clusterNamePrefix;
    // controller
    TestHelper.setupCluster(// controller
    "CONTROLLER_" + clusterNamePrefix, // controller
    ZK_ADDR, // controller
    0, // participant name prefix
    "controller", // resource name prefix
    clusterNamePrefix, // resources
    1, // partitions per resource
    clusterNb, // number of nodes
    n, // replicas
    3, "LeaderStandby", // do rebalance
    true);
    // start distributed cluster controllers
    ClusterDistributedController[] controllers = new ClusterDistributedController[n + n];
    for (int i = 0; i < n; i++) {
        controllers[i] = new ClusterDistributedController(ZK_ADDR, controllerClusterName, "controller_" + i);
        controllers[i].syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName), 30000);
    Assert.assertTrue(result, "Controller cluster NOT in ideal state");
    // start first cluster
    MockParticipantManager[] participants = new MockParticipantManager[n];
    final String firstClusterName = clusterNamePrefix + "0_0";
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost0_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, firstClusterName, instanceName);
        participants[i].syncStart();
    }
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, firstClusterName));
    Assert.assertTrue(result, "first cluster NOT in ideal state");
    // add more controllers to controller cluster
    ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
    for (int i = 0; i < n; i++) {
        String controller = "controller_" + (n + i);
        setupTool.addInstanceToCluster(controllerClusterName, controller);
    }
    setupTool.rebalanceStorageCluster(controllerClusterName, clusterNamePrefix + "0", 6);
    for (int i = n; i < 2 * n; i++) {
        controllers[i] = new ClusterDistributedController(ZK_ADDR, controllerClusterName, "controller_" + i);
        controllers[i].syncStart();
    }
    // verify controller cluster
    result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName));
    Assert.assertTrue(result, "Controller cluster NOT in ideal state");
    // verify first cluster
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, firstClusterName));
    Assert.assertTrue(result, "first cluster NOT in ideal state");
    // stop controller_0-5
    ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(controllerClusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    for (int i = 0; i < n; i++) {
        LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
        String leaderName = leader.getId();
        int j = Integer.parseInt(leaderName.substring(leaderName.lastIndexOf('_') + 1));
        controllers[j].syncStop();
        result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName));
        Assert.assertTrue(result, "Controller cluster NOT in ideal state");
        result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, firstClusterName));
        Assert.assertTrue(result, "first cluster NOT in ideal state");
    }
    // clean up
    // wait for all zk callbacks done
    System.out.println("Cleaning up...");
    for (int i = 0; i < 5; i++) {
        result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName));
        controllers[i].syncStop();
    }
    for (int i = 0; i < 5; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterNamePrefix + " at " + new Date(System.currentTimeMillis()));
}

Example 33 with LiveInstance

use of org.apache.helix.model.LiveInstance in project helix by apache.

the class TestDistributedClusterController method testDistributedClusterController.

@Test
public void testDistributedClusterController() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterNamePrefix = className + "_" + methodName;
    final int n = 5;
    final int clusterNb = 10;
    System.out.println("START " + clusterNamePrefix + " at " + new Date(System.currentTimeMillis()));
    // setup 10 clusters
    for (int i = 0; i < clusterNb; i++) {
        String clusterName = clusterNamePrefix + "0_" + i;
        String participantName = "localhost" + i;
        String resourceName = "TestDB" + i;
        // participant port
        TestHelper.setupCluster(// participant port
        clusterName, // participant port
        ZK_ADDR, // participant port
        12918, // participant name prefix
        participantName, // resource name prefix
        resourceName, // resources
        1, // partitions per resource
        8, // number of nodes
        n, // replicas
        3, "MasterSlave", // do rebalance
        true);
    }
    // setup controller cluster
    final String controllerClusterName = "CONTROLLER_" + clusterNamePrefix;
    // controller
    TestHelper.setupCluster(// controller
    "CONTROLLER_" + clusterNamePrefix, // controller
    ZK_ADDR, // controller
    0, // participant name prefix
    "controller", // resource name prefix
    clusterNamePrefix, // resources
    1, // partitions per resource
    clusterNb, // number of nodes
    n, // replicas
    3, "LeaderStandby", // do rebalance
    true);
    // start distributed cluster controllers
    ClusterDistributedController[] controllers = new ClusterDistributedController[n];
    for (int i = 0; i < n; i++) {
        controllers[i] = new ClusterDistributedController(ZK_ADDR, controllerClusterName, "controller_" + i);
        controllers[i].syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName), 30000);
    Assert.assertTrue(result, "Controller cluster NOT in ideal state");
    // start first cluster
    MockParticipantManager[] participants = new MockParticipantManager[n];
    final String firstClusterName = clusterNamePrefix + "0_0";
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost0_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, firstClusterName, instanceName);
        participants[i].syncStart();
    }
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, firstClusterName));
    Assert.assertTrue(result, "first cluster NOT in ideal state");
    // stop current leader in controller cluster
    ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(controllerClusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    String leaderName = leader.getId();
    int j = Integer.parseInt(leaderName.substring(leaderName.lastIndexOf('_') + 1));
    controllers[j].syncStop();
    // setup the second cluster
    MockParticipantManager[] participants2 = new MockParticipantManager[n];
    final String secondClusterName = clusterNamePrefix + "0_1";
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost1_" + (12918 + i);
        participants2[i] = new MockParticipantManager(ZK_ADDR, secondClusterName, instanceName);
        participants2[i].syncStart();
    }
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, secondClusterName));
    Assert.assertTrue(result, "second cluster NOT in ideal state");
    // clean up
    // wait for all zk callbacks done
    System.out.println("Cleaning up...");
    for (int i = 0; i < 5; i++) {
        result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, controllerClusterName));
        controllers[i].syncStop();
    }
    for (int i = 0; i < 5; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterNamePrefix + " at " + new Date(System.currentTimeMillis()));
}

Example 34 with LiveInstance

use of org.apache.helix.model.LiveInstance in project helix by apache.

the class TestReelectedPipelineCorrectness method testReelection.

@Test
public void testReelection() throws Exception {
    final int NUM_CONTROLLERS = 2;
    final int NUM_PARTICIPANTS = 4;
    final int NUM_PARTITIONS = 8;
    final int NUM_REPLICAS = 2;
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
    // Set up cluster
    // participant port
    TestHelper.setupCluster(// participant port
    clusterName, // participant port
    ZK_ADDR, // participant port
    12918, // participant name prefix
    "localhost", // resource name prefix
    "TestDB", // resources
    1, // partitions per resource
    NUM_PARTITIONS, // number of nodes
    NUM_PARTICIPANTS, // replicas
    NUM_REPLICAS, "MasterSlave", RebalanceMode.FULL_AUTO, // do rebalance
    true);
    // configure distributed controllers
    String controllerCluster = clusterName + "_controllers";
    setupTool.addCluster(controllerCluster, true);
    for (int i = 0; i < NUM_CONTROLLERS; i++) {
        setupTool.addInstanceToCluster(controllerCluster, "controller_" + i);
    }
    setupTool.activateCluster(clusterName, controllerCluster, true);
    // 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();
    }
    // start controllers
    ClusterDistributedController[] controllers = new ClusterDistributedController[NUM_CONTROLLERS];
    for (int i = 0; i < NUM_CONTROLLERS; i++) {
        controllers[i] = new ClusterDistributedController(ZK_ADDR, controllerCluster, "controller_" + i);
        controllers[i].syncStart();
    }
    Thread.sleep(1000);
    // Ensure a balanced cluster
    boolean result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Disable the leader, resulting in a leader election
    HelixDataAccessor accessor = participants[0].getHelixDataAccessor();
    LiveInstance leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    int totalWait = 0;
    while (leader == null && totalWait < CHECK_TIMEOUT) {
        Thread.sleep(CHECK_INTERVAL);
        totalWait += CHECK_INTERVAL;
        leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    }
    if (totalWait >= CHECK_TIMEOUT) {
        Assert.fail("No leader was ever elected!");
    }
    String leaderId = leader.getId();
    String standbyId = (leaderId.equals("controller_0")) ? "controller_1" : "controller_0";
    HelixAdmin admin = setupTool.getClusterManagementTool();
    admin.enableInstance(controllerCluster, leaderId, false);
    // Stop a participant to make sure that the leader election worked
    Thread.sleep(500);
    participants[0].syncStop();
    Thread.sleep(500);
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Disable the original standby (leaving 0 active controllers) and kill another participant
    admin.enableInstance(controllerCluster, standbyId, false);
    Thread.sleep(500);
    participants[1].syncStop();
    // Also change the ideal state
    IdealState idealState = admin.getResourceIdealState(clusterName, "TestDB0");
    idealState.setMaxPartitionsPerInstance(1);
    admin.setResourceIdealState(clusterName, "TestDB0", idealState);
    Thread.sleep(500);
    // Also disable an instance in the main cluster
    admin.enableInstance(clusterName, "localhost_12920", false);
    // Re-enable the original leader
    admin.enableInstance(controllerCluster, leaderId, true);
    // Now check that both the ideal state and the live instances are adhered to by the rebalance
    Thread.sleep(500);
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // cleanup
    for (int i = 0; i < NUM_CONTROLLERS; i++) {
        controllers[i].syncStop();
    }
    for (int i = 2; i < NUM_PARTICIPANTS; i++) {
        participants[i].syncStop();
    }
    System.out.println("STOP " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 35 with LiveInstance

use of org.apache.helix.model.LiveInstance in project helix by apache.

the class TestResetPartitionState method clearStatusUpdate.

private void clearStatusUpdate(String clusterName, String instance, String resource, String partition) {
    // clear status update for error partition so verify() will not fail on old
    // errors
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instance));
    accessor.removeProperty(keyBuilder.stateTransitionStatus(instance, liveInstance.getSessionId(), resource, partition));
}