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

Example 11 with ZkBaseDataAccessor

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

the class ServerContext method getDataAccssor.

public HelixDataAccessor getDataAccssor(String clusterName) {
    synchronized (_helixDataAccessorPool) {
        if (!_helixDataAccessorPool.containsKey(clusterName)) {
            ZkBaseDataAccessor<ZNRecord> baseDataAccessor = new ZkBaseDataAccessor<>(getZkClient());
            _helixDataAccessorPool.put(clusterName, new ZKHelixDataAccessor(clusterName, InstanceType.ADMINISTRATOR, baseDataAccessor));
        }
        return _helixDataAccessorPool.get(clusterName);
    }
}

Example 12 with ZkBaseDataAccessor

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

the class TestZNRecordSizeLimit method testZNRecordSizeLimitUseZNRecordStreamingSerializer.

@Test
public void testZNRecordSizeLimitUseZNRecordStreamingSerializer() {
    String className = getShortClassName();
    System.out.println("START testZNRecordSizeLimitUseZNRecordStreamingSerializer at " + new Date(System.currentTimeMillis()));
    ZNRecordStreamingSerializer serializer = new ZNRecordStreamingSerializer();
    ZkClient zkClient = new ZkClient(ZK_ADDR);
    zkClient.setZkSerializer(serializer);
    String root = className;
    byte[] buf = new byte[1024];
    for (int i = 0; i < 1024; i++) {
        buf[i] = 'a';
    }
    String bufStr = new String(buf);
    // test zkClient
    // legal-sized data gets written to zk
    // write a znode of size less than 1m
    final ZNRecord smallRecord = new ZNRecord("normalsize");
    smallRecord.getSimpleFields().clear();
    for (int i = 0; i < 900; i++) {
        smallRecord.setSimpleField(i + "", bufStr);
    }
    String path1 = "/" + root + "/test1";
    zkClient.createPersistent(path1, true);
    zkClient.writeData(path1, smallRecord);
    ZNRecord record = zkClient.readData(path1);
    Assert.assertTrue(serializer.serialize(record).length > 900 * 1024);
    // oversized data doesn't create any data on zk
    // prepare a znode of size larger than 1m
    final ZNRecord largeRecord = new ZNRecord("oversize");
    largeRecord.getSimpleFields().clear();
    for (int i = 0; i < 1024; i++) {
        largeRecord.setSimpleField(i + "", bufStr);
    }
    String path2 = "/" + root + "/test2";
    zkClient.createPersistent(path2, true);
    try {
        zkClient.writeData(path2, largeRecord);
    } catch (HelixException e) {
        Assert.fail("Should not fail because data size is larger than 1M since compression applied");
    }
    record = zkClient.readData(path2);
    Assert.assertNotNull(record);
    // oversized write doesn't overwrite existing data on zk
    record = zkClient.readData(path1);
    try {
        zkClient.writeData(path1, largeRecord);
    } catch (HelixException e) {
        Assert.fail("Should not fail because data size is larger than 1M since compression applied");
    }
    ZNRecord recordNew = zkClient.readData(path1);
    byte[] arr = serializer.serialize(record);
    byte[] arrNew = serializer.serialize(recordNew);
    Assert.assertFalse(Arrays.equals(arr, arrNew));
    // test ZkDataAccessor
    ZKHelixAdmin admin = new ZKHelixAdmin(zkClient);
    admin.addCluster(className, true);
    InstanceConfig instanceConfig = new InstanceConfig("localhost_12918");
    admin.addInstance(className, instanceConfig);
    // oversized data should not create any new data on zk
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(className, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    // ZNRecord statusUpdates = new ZNRecord("statusUpdates");
    IdealState idealState = new IdealState("currentState");
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 0; i < 1024; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    boolean succeed = accessor.setProperty(keyBuilder.idealStates("TestDB_1"), idealState);
    Assert.assertTrue(succeed);
    HelixProperty property = accessor.getProperty(keyBuilder.idealStates("TestDB_1"));
    Assert.assertNotNull(property);
    // legal sized data gets written to zk
    idealState.getRecord().getSimpleFields().clear();
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 0; i < 900; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    succeed = accessor.setProperty(keyBuilder.idealStates("TestDB_2"), idealState);
    Assert.assertTrue(succeed);
    record = accessor.getProperty(keyBuilder.idealStates("TestDB_2")).getRecord();
    Assert.assertTrue(serializer.serialize(record).length > 900 * 1024);
    // oversized data should not update existing data on zk
    idealState.getRecord().getSimpleFields().clear();
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 900; i < 1024; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    // System.out.println("record: " + idealState.getRecord());
    succeed = accessor.updateProperty(keyBuilder.idealStates("TestDB_2"), idealState);
    Assert.assertTrue(succeed);
    recordNew = accessor.getProperty(keyBuilder.idealStates("TestDB_2")).getRecord();
    arr = serializer.serialize(record);
    arrNew = serializer.serialize(recordNew);
    Assert.assertFalse(Arrays.equals(arr, arrNew));
    System.out.println("END testZNRecordSizeLimitUseZNRecordStreamingSerializer at " + new Date(System.currentTimeMillis()));
}

Example 13 with ZkBaseDataAccessor

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

the class TestZNRecordSizeLimit method testZNRecordSizeLimitUseZNRecordSerializer.

@Test
public void testZNRecordSizeLimitUseZNRecordSerializer() {
    String className = getShortClassName();
    System.out.println("START testZNRecordSizeLimitUseZNRecordSerializer at " + new Date(System.currentTimeMillis()));
    ZNRecordSerializer serializer = new ZNRecordSerializer();
    ZkClient zkClient = new ZkClient(ZK_ADDR);
    zkClient.setZkSerializer(serializer);
    String root = className;
    byte[] buf = new byte[1024];
    for (int i = 0; i < 1024; i++) {
        buf[i] = 'a';
    }
    String bufStr = new String(buf);
    // test zkClient
    // legal-sized data gets written to zk
    // write a znode of size less than 1m
    final ZNRecord smallRecord = new ZNRecord("normalsize");
    smallRecord.getSimpleFields().clear();
    for (int i = 0; i < 900; i++) {
        smallRecord.setSimpleField(i + "", bufStr);
    }
    String path1 = "/" + root + "/test1";
    zkClient.createPersistent(path1, true);
    zkClient.writeData(path1, smallRecord);
    ZNRecord record = zkClient.readData(path1);
    Assert.assertTrue(serializer.serialize(record).length > 900 * 1024);
    // oversized data doesn't create any data on zk
    // prepare a znode of size larger than 1m
    final ZNRecord largeRecord = new ZNRecord("oversize");
    largeRecord.getSimpleFields().clear();
    for (int i = 0; i < 1024; i++) {
        largeRecord.setSimpleField(i + "", bufStr);
    }
    String path2 = "/" + root + "/test2";
    zkClient.createPersistent(path2, true);
    try {
        zkClient.writeData(path2, largeRecord);
    } catch (HelixException e) {
        Assert.fail("Should not fail because data size is larger than 1M since compression applied");
    }
    record = zkClient.readData(path2);
    Assert.assertNotNull(record);
    // oversized write doesn't overwrite existing data on zk
    record = zkClient.readData(path1);
    try {
        zkClient.writeData(path1, largeRecord);
    } catch (HelixException e) {
        Assert.fail("Should not fail because data size is larger than 1M since compression applied");
    }
    ZNRecord recordNew = zkClient.readData(path1);
    byte[] arr = serializer.serialize(record);
    byte[] arrNew = serializer.serialize(recordNew);
    Assert.assertFalse(Arrays.equals(arr, arrNew));
    // test ZkDataAccessor
    ZKHelixAdmin admin = new ZKHelixAdmin(zkClient);
    admin.addCluster(className, true);
    InstanceConfig instanceConfig = new InstanceConfig("localhost_12918");
    admin.addInstance(className, instanceConfig);
    // oversized data should not create any new data on zk
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(className, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = new IdealState("currentState");
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 0; i < 1024; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    boolean succeed = accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
    Assert.assertTrue(succeed);
    HelixProperty property = accessor.getProperty(keyBuilder.stateTransitionStatus("localhost_12918", "session_1", "partition_1"));
    Assert.assertNull(property);
    // legal sized data gets written to zk
    idealState.getRecord().getSimpleFields().clear();
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 0; i < 900; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    succeed = accessor.setProperty(keyBuilder.idealStates("TestDB1"), idealState);
    Assert.assertTrue(succeed);
    record = accessor.getProperty(keyBuilder.idealStates("TestDB1")).getRecord();
    Assert.assertTrue(serializer.serialize(record).length > 900 * 1024);
    // oversized data should not update existing data on zk
    idealState.getRecord().getSimpleFields().clear();
    idealState.setStateModelDefRef("MasterSlave");
    idealState.setRebalanceMode(RebalanceMode.SEMI_AUTO);
    idealState.setNumPartitions(10);
    for (int i = 900; i < 1024; i++) {
        idealState.getRecord().setSimpleField(i + "", bufStr);
    }
    // System.out.println("record: " + idealState.getRecord());
    succeed = accessor.updateProperty(keyBuilder.idealStates("TestDB1"), idealState);
    Assert.assertTrue(succeed);
    recordNew = accessor.getProperty(keyBuilder.idealStates("TestDB1")).getRecord();
    arr = serializer.serialize(record);
    arrNew = serializer.serialize(recordNew);
    Assert.assertFalse(Arrays.equals(arr, arrNew));
    System.out.println("END testZNRecordSizeLimitUseZNRecordSerializer at " + new Date(System.currentTimeMillis()));
}

Example 14 with ZkBaseDataAccessor

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

the class TestDisable method testDisablePartitionCustomIS.

@Test
public void testDisablePartitionCustomIS() throws Exception {
    // Logger.getRootLogger().setLevel(Level.INFO);
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    final int n = 5;
    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
    8, // number of nodes
    n, // replicas
    3, "MasterSlave", // do rebalance
    true);
    // set ideal state to customized mode
    ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setRebalanceMode(RebalanceMode.CUSTOMIZED);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
    // start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
    controller.syncStart();
    // start participants
    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 BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // disable [TestDB0_0, TestDB0_5] on localhost_12919
    String command = "--zkSvr " + ZK_ADDR + " --enablePartition false " + clusterName + " localhost_12919 TestDB0 TestDB0_0 TestDB0_5";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // make sure localhost_12918 is in OFFLINE state for [TestDB0_0, TestDB0_5]
    Map<String, Map<String, String>> expectStateMap = new HashMap<String, Map<String, String>>();
    Map<String, String> expectInstanceStateMap = new HashMap<String, String>();
    expectInstanceStateMap.put("localhost_12919", "OFFLINE");
    expectStateMap.put("TestDB0_0", expectInstanceStateMap);
    expectStateMap.put("TestDB0_5", expectInstanceStateMap);
    result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "==");
    Assert.assertTrue(result, "localhost_12919" + " should be in OFFLINE for [TestDB0_0, TestDB0_5]");
    // re-enable localhost_12919 for [TestDB0_0, TestDB0_5]
    command = "--zkSvr " + ZK_ADDR + " --enablePartition true " + clusterName + " localhost_12919 TestDB0 TestDB0_0 TestDB0_5";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // make sure localhost_12919 is NOT in OFFLINE state for [TestDB0_0, TestDB0_5]
    result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "!=");
    Assert.assertTrue(result, "localhost_12919" + " should NOT be in OFFLINE");
    // clean up
    // wait for all zk callbacks done
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 15 with ZkBaseDataAccessor

use of org.apache.helix.manager.zk.ZkBaseDataAccessor 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()));
}