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

Example 1 with ZkBaseDataAccessor

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

the class TimeBoundaryServiceTest method beforeTest.

@BeforeTest
public void beforeTest() {
    _zookeeperInstance = ZkStarter.startLocalZkServer();
    _zkClient = new ZkClient(StringUtil.join("/", StringUtils.chomp(ZkStarter.DEFAULT_ZK_STR, "/")), ZkClient.DEFAULT_SESSION_TIMEOUT, ZkClient.DEFAULT_CONNECTION_TIMEOUT, new ZNRecordSerializer());
    String helixClusterName = "TestTimeBoundaryService";
    _zkClient.deleteRecursive("/" + helixClusterName + "/PROPERTYSTORE");
    _zkClient.createPersistent("/" + helixClusterName + "/PROPERTYSTORE", true);
    _propertyStore = new ZkHelixPropertyStore<ZNRecord>(new ZkBaseDataAccessor<ZNRecord>(_zkClient), "/" + helixClusterName + "/PROPERTYSTORE", null);
}

Example 2 with ZkBaseDataAccessor

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

the class DeleteOverlappingSegmentsInPinot method deleteOverlappingSegments.

public static boolean deleteOverlappingSegments(String zkUrl, String zkCluster, String tableName) {
    boolean updateSuccessful = false;
    if (!tableName.endsWith("_OFFLINE")) {
        tableName = tableName + "_OFFLINE";
    }
    ZkClient zkClient = new ZkClient(zkUrl);
    ZNRecordSerializer zkSerializer = new ZNRecordSerializer();
    zkClient.setZkSerializer(zkSerializer);
    BaseDataAccessor<ZNRecord> baseDataAccessor = new ZkBaseDataAccessor<>(zkClient);
    HelixDataAccessor helixDataAccessor = new ZKHelixDataAccessor(zkCluster, baseDataAccessor);
    Builder keyBuilder = helixDataAccessor.keyBuilder();
    PropertyKey idealStateKey = keyBuilder.idealStates(tableName);
    PropertyKey externalViewKey = keyBuilder.externalView(tableName);
    IdealState currentIdealState = helixDataAccessor.getProperty(idealStateKey);
    byte[] serializeIS = zkSerializer.serialize(currentIdealState.getRecord());
    String name = tableName + ".idealstate." + System.currentTimeMillis();
    File outputFile = new File("/tmp", name);
    try (FileOutputStream fileOutputStream = new FileOutputStream(outputFile)) {
        IOUtils.write(serializeIS, fileOutputStream);
    } catch (IOException e) {
        LOG.error("Exception in delete overlapping segments", e);
        return updateSuccessful;
    }
    LOG.info("Saved current idealstate to {}", outputFile);
    IdealState newIdealState;
    do {
        newIdealState = computeNewIdealStateAfterDeletingOverlappingSegments(helixDataAccessor, idealStateKey);
        LOG.info("Updating IdealState");
        updateSuccessful = helixDataAccessor.getBaseDataAccessor().set(idealStateKey.getPath(), newIdealState.getRecord(), newIdealState.getRecord().getVersion(), AccessOption.PERSISTENT);
        if (updateSuccessful) {
            int numSegmentsDeleted = currentIdealState.getPartitionSet().size() - newIdealState.getPartitionSet().size();
            LOG.info("Successfully updated IdealState: Removed segments: {}", (numSegmentsDeleted));
        }
    } while (!updateSuccessful);
    try {
        while (true) {
            Thread.sleep(10000);
            ExternalView externalView = helixDataAccessor.getProperty(externalViewKey);
            IdealState idealState = helixDataAccessor.getProperty(idealStateKey);
            Set<String> evPartitionSet = externalView.getPartitionSet();
            Set<String> isPartitionSet = idealState.getPartitionSet();
            if (evPartitionSet.equals(isPartitionSet)) {
                LOG.info("Table {} has reached stable state. i.e segments in external view match idealstates", tableName);
                break;
            }
        }
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    return updateSuccessful;
}

Example 3 with ZkBaseDataAccessor

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

the class TestHelixAdminCli method testDropAddResource.

@Test
public void testDropAddResource() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    String grandClusterName = clusterName + "_grand";
    final int n = 6;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[n];
    ClusterDistributedController[] controllers = new ClusterDistributedController[2];
    setupCluster(clusterName, grandClusterName, n, participants, controllers);
    String command = "-zkSvr " + ZK_ADDR + " -activateCluster " + clusterName + " " + grandClusterName + " true";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    Thread.sleep(500);
    // save ideal state
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    IdealState idealState = accessor.getProperty(accessor.keyBuilder().idealStates("db_11"));
    ZNRecordJsonSerializer serializer = new ZNRecordJsonSerializer();
    String tmpDir = System.getProperty("java.io.tmpdir");
    if (tmpDir == null) {
        tmpDir = "/tmp";
    }
    final String tmpIdealStateFile = tmpDir + "/" + clusterName + "_idealState.log";
    FileWriter fos = new FileWriter(tmpIdealStateFile);
    PrintWriter pw = new PrintWriter(fos);
    pw.write(new String(serializer.serialize(idealState.getRecord())));
    pw.close();
    command = "-zkSvr " + ZK_ADDR + " -dropResource " + clusterName + " db_11 ";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    boolean verifyResult = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(verifyResult);
    command = "-zkSvr " + ZK_ADDR + " -addIdealState " + clusterName + " db_11 " + tmpIdealStateFile;
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    verifyResult = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(verifyResult);
    IdealState idealState2 = accessor.getProperty(accessor.keyBuilder().idealStates("db_11"));
    Assert.assertTrue(idealState2.getRecord().equals(idealState.getRecord()));
    // clean up
    for (int i = 0; i < controllers.length; i++) {
        controllers[i].syncStop();
    }
    for (int i = 0; i < participants.length; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 4 with ZkBaseDataAccessor

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

the class TestHelixAdminCli method testInstanceOperations.

@Test
public void testInstanceOperations() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    String grandClusterName = clusterName + "_grand";
    final int n = 6;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[n];
    ClusterDistributedController[] controllers = new ClusterDistributedController[2];
    setupCluster(clusterName, grandClusterName, n, participants, controllers);
    String command = "-zkSvr " + ZK_ADDR + " -activateCluster " + clusterName + " " + grandClusterName + " true";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    Thread.sleep(500);
    // drop node should fail if the node is not disabled
    command = "-zkSvr " + ZK_ADDR + " -dropNode " + clusterName + " localhost:1232";
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("dropNode should fail since the node is not disabled");
    } catch (Exception e) {
    // OK
    }
    // disabled node
    command = "-zkSvr " + ZK_ADDR + " -enableInstance " + clusterName + " localhost:1232 false";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    // Cannot dropNode if the node is not disconnected
    command = "-zkSvr " + ZK_ADDR + " -dropNode " + clusterName + " localhost:1232";
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("dropNode should fail since the node is not disconnected");
    } catch (Exception e) {
    // OK
    }
    // Cannot swapNode if the node is not disconnected
    command = "-zkSvr " + ZK_ADDR + " -swapInstance " + clusterName + " localhost_1232 localhost_12320";
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("swapInstance should fail since the node is not disconnected");
    } catch (Exception e) {
    // OK
    }
    // disconnect localhost_1232
    participants[2].syncStop();
    // add new node then swap instance
    command = "-zkSvr " + ZK_ADDR + " -addNode " + clusterName + " localhost:12320";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    // swap instance. The instance get swapped out should not exist anymore
    command = "-zkSvr " + ZK_ADDR + " -swapInstance " + clusterName + " localhost_1232 localhost_12320";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    String path = accessor.keyBuilder().instanceConfig("localhost_1232").getPath();
    Assert.assertFalse(_gZkClient.exists(path), path + " should not exist since localhost_1232 has been swapped by localhost_12320");
    // clean up
    for (int i = 0; i < controllers.length; i++) {
        controllers[i].syncStop();
    }
    for (int i = 0; i < participants.length; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 5 with ZkBaseDataAccessor

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

the class TestHelixAdminCli method testStartCluster.

@Test
public void testStartCluster() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    String grandClusterName = clusterName + "_grand";
    final int n = 6;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[n];
    ClusterDistributedController[] controllers = new ClusterDistributedController[2];
    setupCluster(clusterName, grandClusterName, n, participants, controllers);
    // activate clusters
    // wrong grand clusterName
    String command = "-zkSvr localhost:2183 -activateCluster " + clusterName + " nonExistGrandCluster true";
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("add " + clusterName + " to grandCluster should fail since grandCluster doesn't exists");
    } catch (Exception e) {
    // OK
    }
    // wrong cluster name
    command = "-zkSvr localhost:2183 -activateCluster nonExistCluster " + grandClusterName + " true";
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("add nonExistCluster to " + grandClusterName + " should fail since nonExistCluster doesn't exists");
    } catch (Exception e) {
    // OK
    }
    command = "-zkSvr localhost:2183 -activateCluster " + clusterName + " " + grandClusterName + " true";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    Thread.sleep(500);
    // drop a running cluster
    command = "-zkSvr localhost:2183 -dropCluster " + clusterName;
    try {
        ClusterSetup.processCommandLineArgs(command.split("\\s+"));
        Assert.fail("drop " + clusterName + " should fail since it's still running");
    } catch (Exception e) {
    // OK
    }
    // verify leader node
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(grandClusterName, baseAccessor);
    LiveInstance controllerLeader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    Assert.assertNotNull(controllerLeader, "controllerLeader should be either controller_9000 or controller_9001");
    Assert.assertTrue(controllerLeader.getInstanceName().startsWith("controller_900"));
    accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    LiveInstance leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    for (int i = 0; i < 20; i++) {
        if (leader != null) {
            break;
        }
        Thread.sleep(200);
        leader = accessor.getProperty(accessor.keyBuilder().controllerLeader());
    }
    Assert.assertTrue(leader.getInstanceName().startsWith("controller_900"));
    boolean verifyResult = ClusterStateVerifier.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(verifyResult);
    verifyResult = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(verifyResult);
    // clean up
    for (ClusterDistributedController controller : controllers) {
        controller.syncStop();
    }
    for (int i = 0; i < participants.length; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}