Examples with ZKHelixDataAccessor org.apache.helix.manager.zk.ZKHelixDataAccessor used on opensource projects

Example 81 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestDrop method testDropErrorPartitionCustomIS.

@Test
public void testDropErrorPartitionCustomIS() throws Exception {
    // Logger.getRootLogger().setLevel(Level.INFO);
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    final int n = 2;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[n];
    // 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
    2, // number of nodes
    n, // replicas
    2, "MasterSlave", // do rebalance
    false);
    // set custom ideal-state
    CustomModeISBuilder isBuilder = new CustomModeISBuilder("TestDB0");
    isBuilder.setNumPartitions(2);
    isBuilder.setNumReplica(2);
    isBuilder.setStateModel("MasterSlave");
    isBuilder.assignInstanceAndState("TestDB0_0", "localhost_12918", "MASTER");
    isBuilder.assignInstanceAndState("TestDB0_0", "localhost_12919", "SLAVE");
    isBuilder.assignInstanceAndState("TestDB0_1", "localhost_12919", "MASTER");
    isBuilder.assignInstanceAndState("TestDB0_1", "localhost_12918", "SLAVE");
    HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), isBuilder.build());
    // start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
    controller.syncStart();
    // start participants
    Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
    errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_0"));
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost_" + (12918 + i);
        if (i == 0) {
            participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
            participants[i].setTransition(new ErrTransition(errTransitions));
        } else {
            participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        }
        participants[i].syncStart();
    }
    Map<String, Map<String, String>> errStateMap = new HashMap<String, Map<String, String>>();
    errStateMap.put("TestDB0", new HashMap<String, String>());
    errStateMap.get("TestDB0").put("TestDB0_0", "localhost_12918");
    HelixClusterVerifier verifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).setErrStates(errStateMap).build();
    Assert.assertTrue(verifier.verify());
    // drop resource containing error partitions should drop the partition successfully
    ClusterSetup.processCommandLineArgs(new String[] { "--zkSvr", ZK_ADDR, "--dropResource", clusterName, "TestDB0" });
    // make sure TestDB0_0 partition is dropped
    verifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build();
    Assert.assertTrue(verifier.verify(), "Should be empty exeternal-view");
    assertEmptyCSandEV(clusterName, "TestDB0", participants);
    // clean up
    controller.syncStop();
    for (int i = 0; i < n; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 82 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestBucketizedResource method testBucketizedResource.

@Test()
public void testBucketizedResource() {
    // Logger.getRootLogger().setLevel(Level.INFO);
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    List<String> instanceNames = Arrays.asList("localhost_12918", "localhost_12919", "localhost_12920", "localhost_12921", "localhost_12922");
    int n = instanceNames.size();
    String dbName = "TestDB0";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[5];
    setupCluster(clusterName, instanceNames, dbName, 3, 10, 1);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName);
    controller.syncStart();
    // start participants
    for (int i = 0; i < n; i++) {
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i));
        participants[i].syncStart();
    }
    PropertyKey evKey = accessor.keyBuilder().externalView(dbName);
    boolean result = ClusterStateVerifier.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    HelixClusterVerifier _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build();
    Assert.assertTrue(_clusterVerifier.verify());
    ExternalView ev = accessor.getProperty(evKey);
    int v1 = ev.getRecord().getVersion();
    // disable the participant
    _gSetupTool.getClusterManagementTool().enableInstance(clusterName, participants[0].getInstanceName(), false);
    // wait for change in EV
    Assert.assertTrue(_clusterVerifier.verify());
    // read the version in EV
    ev = accessor.getProperty(evKey);
    int v2 = ev.getRecord().getVersion();
    Assert.assertEquals(v2 > v1, true);
    // clean up
    controller.syncStop();
    for (int i = 0; i < n; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 83 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestBucketizedResource method testListenerOnBucketizedResource.

@Test
public void testListenerOnBucketizedResource() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    String dbName = "TestDB0";
    List<String> instanceNames = Arrays.asList("localhost_0", "localhost_1", "localhost_2", "localhost_3", "localhost_4");
    int n = instanceNames.size();
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    setupCluster(clusterName, instanceNames, dbName, 3, 10, 2);
    // start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName);
    controller.syncStart();
    // start participants
    MockParticipantManager[] participants = new MockParticipantManager[n];
    for (int i = 0; i < n; i++) {
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i));
        participants[i].syncStart();
    }
    HelixClusterVerifier _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build();
    Assert.assertTrue(_clusterVerifier.verify());
    // add an external view listener
    TestExternalViewListener listener = new TestExternalViewListener();
    controller.addExternalViewChangeListener(listener);
    // remove "TestDB0"
    _gSetupTool.dropResourceFromCluster(clusterName, dbName);
    Assert.assertTrue(_clusterVerifier.verify());
    // wait callback to finish
    int waitTime = 0;
    do {
        Thread.sleep(100);
        waitTime += 100;
        if (waitTime > 30000) {
            break;
        }
    } while (listener.cbCnt == 0);
    listener.cbCnt = 0;
    // add a new db
    String newDbName = "TestDB1";
    int r = 3;
    ZNRecord idealStateRec = DefaultIdealStateCalculator.calculateIdealState(instanceNames, 10, r - 1, newDbName, "MASTER", "SLAVE");
    IdealState idealState = new IdealState(idealStateRec);
    idealState.setBucketSize(2);
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(IdealState.RebalanceMode.CUSTOMIZED);
    idealState.setReplicas(Integer.toString(r));
    accessor.setProperty(keyBuilder.idealStates(newDbName), idealState);
    Assert.assertTrue(_clusterVerifier.verify());
    Thread.sleep(200);
    Assert.assertTrue(listener.cbCnt > 0);
    // clean up
    controller.syncStop();
    for (MockParticipantManager participant : participants) {
        participant.syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 84 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestBucketizedResource method testBounceDisableAndDrop.

@Test
public void testBounceDisableAndDrop() {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    String dbName = "TestDB0";
    List<String> instanceNames = Arrays.asList("localhost_0", "localhost_1", "localhost_2", "localhost_3", "localhost_4");
    int n = instanceNames.size();
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    setupCluster(clusterName, instanceNames, dbName, 3, 10, 2);
    // start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName);
    controller.syncStart();
    // start participants
    MockParticipantManager[] participants = new MockParticipantManager[n];
    for (int i = 0; i < n; i++) {
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i));
        participants[i].syncStart();
    }
    HelixClusterVerifier _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build();
    Assert.assertTrue(_clusterVerifier.verify());
    // bounce
    participants[0].syncStop();
    participants[0] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(0));
    participants[0].syncStart();
    Assert.assertTrue(_clusterVerifier.verify());
    // make sure participants[0]'s current state is bucketzied correctly during carryover
    String path = keyBuilder.currentState(instanceNames.get(0), participants[0].getSessionId(), dbName).getPath();
    ZNRecord record = _baseAccessor.get(path, null, 0);
    Assert.assertTrue(record.getMapFields().size() == 0);
    // disable the bucketize resource
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.enableResource(clusterName, dbName, false);
    Assert.assertTrue(_clusterVerifier.verify());
    // drop the bucketize resource
    _gSetupTool.dropResourceFromCluster(clusterName, dbName);
    Assert.assertTrue(_clusterVerifier.verify());
    // make sure external-view is cleaned up
    path = keyBuilder.externalView(dbName).getPath();
    boolean result = _baseAccessor.exists(path, 0);
    Assert.assertFalse(result);
    // clean up
    controller.syncStop();
    for (MockParticipantManager participant : participants) {
        participant.syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 85 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestCleanupExternalView method test.

@Test
public void test() throws Exception {
    // Logger.getRootLogger().setLevel(Level.INFO);
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    int n = 2;
    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
    2, // number of nodes
    n, // replicas
    2, "MasterSlave", // do rebalance
    true);
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
    controller.syncStart();
    // start participants
    MockParticipantManager[] participants = new MockParticipantManager[n];
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        participants[i].syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // disable controller
    ZKHelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.enableCluster(clusterName, false);
    // wait all pending zk-events being processed, otherwise remove current-state will cause
    // controller send O->S message
    ZkTestHelper.tryWaitZkEventsCleaned(controller.getZkClient());
    // System.out.println("paused controller");
    // drop resource
    admin.dropResource(clusterName, "TestDB0");
    // delete current-state manually, controller shall remove external-view when cluster is enabled
    // again
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    // System.out.println("remove current-state");
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance("localhost_12918"));
    accessor.removeProperty(keyBuilder.currentState("localhost_12918", liveInstance.getSessionId(), "TestDB0"));
    liveInstance = accessor.getProperty(keyBuilder.liveInstance("localhost_12919"));
    accessor.removeProperty(keyBuilder.currentState("localhost_12919", liveInstance.getSessionId(), "TestDB0"));
    // re-enable controller shall remove orphan external-view
    // System.out.println("re-enabling controller");
    admin.enableCluster(clusterName, true);
    ExternalView externalView = null;
    for (int i = 0; i < 10; i++) {
        Thread.sleep(100);
        externalView = accessor.getProperty(keyBuilder.externalView("TestDB0"));
        // System.out.println("externalView: " + externalView);
        if (externalView == null) {
            break;
        }
    }
    Assert.assertNull(externalView, "external-view for TestDB0 should be removed, but was: " + externalView);
    // clean up
    controller.syncStop();
    for (int i = 0; i < n; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}