Examples with LoadReport com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport used on opensource projects

Example 1 with LoadReport

use of com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport in project pulsar by yahoo.

the class DiscoveryServiceTest method addBrokerToZk.

private void addBrokerToZk(int number) throws Exception {
    for (int i = 0; i < number; i++) {
        LoadReport report = new LoadReport(null, null, "pulsar://broker-:15000" + i, null);
        String reportData = ObjectMapperFactory.getThreadLocal().writeValueAsString(report);
        ZkUtils.createFullPathOptimistic(mockZookKeeper, LOADBALANCE_BROKERS_ROOT + "/" + "broker-" + i, reportData.getBytes(ZookeeperClientFactoryImpl.ENCODING_SCHEME), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    }
    // wait to get cache updated
    Thread.sleep(100);
}

Example 2 with LoadReport

use of com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport in project pulsar by yahoo.

the class ServerConnection method sendLookupResponse.

private void sendLookupResponse(long requestId) {
    try {
        LoadReport availableBroker = service.getDiscoveryProvider().nextBroker();
        ctx.writeAndFlush(Commands.newLookupResponse(availableBroker.getPulsarServiceUrl(), availableBroker.getPulsarServieUrlTls(), false, Redirect, requestId));
    } catch (PulsarServerException e) {
        LOG.warn("[{}] Failed to get next active broker {}", remoteAddress, e.getMessage(), e);
        ctx.writeAndFlush(Commands.newLookupResponse(ServerError.ServiceNotReady, e.getMessage(), requestId));
    }
}

Example 3 with LoadReport

use of com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport in project pulsar by yahoo.

the class ZookeeperCacheLoaderTest method testZookeeperCacheLoader.

/**
     * Create znode for available broker in ZooKeeper and updates it again to verify ZooKeeper cache update
     *
     * @throws InterruptedException
     * @throws KeeperException
     * @throws IOException
     */
@Test
public void testZookeeperCacheLoader() throws InterruptedException, KeeperException, Exception {
    DiscoveryZooKeeperClientFactoryImpl.zk = mockZookKeeper;
    ZookeeperCacheLoader zkLoader = new ZookeeperCacheLoader(new DiscoveryZooKeeperClientFactoryImpl(), "");
    List<String> brokers = Lists.newArrayList("broker-1:15000", "broker-2:15000", "broker-3:15000");
    // 1. create znode for each broker
    brokers.stream().forEach(b -> {
        try {
            zkLoader.getLocalZkCache().getZooKeeper().create(LOADBALANCE_BROKERS_ROOT + "/" + b, new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
        } catch (KeeperException | InterruptedException e) {
            fail("failed while creating broker znodes");
        }
    });
    // wait for 100 msec: to get cache updated
    Thread.sleep(100);
    // 2. get available brokers from ZookeeperCacheLoader
    List<LoadReport> list = zkLoader.getAvailableBrokers();
    // 3. verify retrieved broker list
    Assert.assertTrue(brokers.containsAll(list));
    // 4.a add new broker
    zkLoader.getLocalZkCache().getZooKeeper().create(LOADBALANCE_BROKERS_ROOT + "/" + "broker-4:15000", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    brokers.add("broker-4:15000");
    // wait for 100 msec: to get cache updated
    Thread.sleep(100);
    // 4.b. get available brokers from ZookeeperCacheLoader
    list = zkLoader.getAvailableBrokers();
    // 4.c. verify retrieved broker list
    Assert.assertTrue(brokers.containsAll(list));
}

Example 4 with LoadReport

use of com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport in project pulsar by yahoo.

the class LoadBalancerTest method testBrokerRanking.

/*
     * Pre-publish load report to ZK, each broker has: - Difference memory capacity, for the first 3 brokers memory is
     * bottleneck, for the 4/5th brokers CPU become bottleneck since memory is big enough - non-bundles assigned so all
     * idle resources are avaiable for new bundle Check the broker rankings are the load percentage of each broker.
     */
@Test
public void testBrokerRanking() throws Exception {
    for (int i = 0; i < BROKER_COUNT; i++) {
        LoadReport lr = new LoadReport();
        lr.setName(lookupAddresses[i]);
        SystemResourceUsage sru = new SystemResourceUsage();
        sru.setBandwidthIn(new ResourceUsage(0, 1024000));
        sru.setBandwidthOut(new ResourceUsage(0, 1024000));
        sru.setMemory(new ResourceUsage(1024, 2048 * (i + 1)));
        sru.setCpu(new ResourceUsage(60, 400));
        lr.setSystemResourceUsage(sru);
        String znodePath = String.format("%s/%s", SimpleLoadManagerImpl.LOADBALANCE_BROKERS_ROOT, lookupAddresses[i]);
        String loadReportJson = objectMapper.writeValueAsString(lr);
        bkEnsemble.getZkClient().setData(znodePath, loadReportJson.getBytes(Charsets.UTF_8), -1);
    }
    // sleep to wait load ranking be triggered
    Thread.sleep(5000);
    // check the ranking result
    for (int i = 0; i < BROKER_COUNT; i++) {
        AtomicReference<Map<Long, Set<ResourceUnit>>> sortedRanking = getSortedRanking(pulsarServices[i]);
        printSortedRanking(sortedRanking);
        // brokers' ranking would be:
        // 50 --> broker 0 ( 1024 / 2048 )
        // 25 --> broker 1 ( 1024 / 4096 )
        // 16 --> broker 2 ( 1024 / 6144 )
        // 15 --> broker 3 ( 60 / 400 )
        // 15 --> broker 4 ( 60 / 400 )
        assertEquals(sortedRanking.get().size(), 4);
        assertEquals(sortedRanking.get().get(50L).size(), 1);
        assertEquals(sortedRanking.get().get(25L).size(), 1);
        assertEquals(sortedRanking.get().get(16L).size(), 1);
        assertEquals(sortedRanking.get().get(15L).size(), 2);
    }
}

Example 5 with LoadReport

use of com.yahoo.pulsar.common.policies.data.loadbalancer.LoadReport in project pulsar by yahoo.

the class LoadBalancerTest method testDestinationAssignmentWithExistingBundles.

/*
     * Pre-publish load report to ZK, each broker has: - Difference memory capacity, for the first 3 brokers memory is
     * bottleneck, for the 4/5th brokers CPU become bottleneck since memory is big enough - already has some bundles
     * assigned Check the distribution of new destinations is roughly consistent (with <10% variation) with the ranking
     */
@Test
public void testDestinationAssignmentWithExistingBundles() throws Exception {
    for (int i = 0; i < BROKER_COUNT; i++) {
        ResourceQuota defaultQuota = new ResourceQuota();
        defaultQuota.setMsgRateIn(20);
        defaultQuota.setMsgRateOut(60);
        defaultQuota.setBandwidthIn(20000);
        defaultQuota.setBandwidthOut(60000);
        defaultQuota.setMemory(87);
        pulsarServices[i].getLocalZkCacheService().getResourceQuotaCache().setDefaultQuota(defaultQuota);
        LoadReport lr = new LoadReport();
        lr.setName(lookupAddresses[i]);
        SystemResourceUsage sru = new SystemResourceUsage();
        sru.setBandwidthIn(new ResourceUsage(0, 1024000));
        sru.setBandwidthOut(new ResourceUsage(0, 1024000));
        sru.setMemory(new ResourceUsage(0, 2048 * (i + 1)));
        sru.setCpu(new ResourceUsage(60, 400));
        lr.setSystemResourceUsage(sru);
        Map<String, NamespaceBundleStats> bundleStats = new HashMap<String, NamespaceBundleStats>();
        for (int j = 0; j < (i + 1) * 5; j++) {
            String bundleName = String.format("pulsar/use/primary-ns-%d-%d/0x00000000_0xffffffff", i, j);
            NamespaceBundleStats stats = new NamespaceBundleStats();
            bundleStats.put(bundleName, stats);
        }
        lr.setBundleStats(bundleStats);
        String znodePath = String.format("%s/%s", SimpleLoadManagerImpl.LOADBALANCE_BROKERS_ROOT, lookupAddresses[i]);
        String loadReportJson = objectMapper.writeValueAsString(lr);
        bkEnsemble.getZkClient().setData(znodePath, loadReportJson.getBytes(Charsets.UTF_8), -1);
    }
    // sleep to wait load ranking be triggered
    Thread.sleep(5000);
    // print ranking
    for (int i = 0; i < BROKER_COUNT; i++) {
        AtomicReference<Map<Long, Set<ResourceUnit>>> sortedRanking = getSortedRanking(pulsarServices[i]);
        printSortedRanking(sortedRanking);
    }
    // check owner of new destiations and verify that the distribution is roughly
    // consistent (variation < 10%) with the broker capacity:
    int totalNamespaces = 250;
    int[] expectedAssignments = new int[] { 17, 34, 51, 68, 85 };
    Map<String, Integer> namespaceOwner = new HashMap<>();
    for (int i = 0; i < totalNamespaces; i++) {
        DestinationName fqdn = DestinationName.get("persistent://pulsar/use/primary-ns-" + i + "/test-topic");
        ResourceUnit found = pulsarServices[0].getLoadManager().getLeastLoaded(pulsarServices[0].getNamespaceService().getBundle(fqdn));
        if (namespaceOwner.containsKey(found.getResourceId())) {
            namespaceOwner.put(found.getResourceId(), namespaceOwner.get(found.getResourceId()) + 1);
        } else {
            namespaceOwner.put(found.getResourceId(), 1);
        }
    }
    double expectedMaxVariation = 10.0;
    for (int i = 0; i < BROKER_COUNT; i++) {
        long actualValue = 0;
        String resourceId = "http://" + lookupAddresses[i];
        if (namespaceOwner.containsKey(resourceId)) {
            actualValue = namespaceOwner.get(resourceId);
        }
        long expectedValue = expectedAssignments[i];
        double variation = Math.abs(actualValue - expectedValue) * 100.0 / expectedValue;
        log.info("Destination assignment - {}, actual: {}, expected baseline: {}, variation: {}/%", lookupAddresses[i], actualValue, expectedValue, String.format("%.2f", variation));
        assertTrue(variation < expectedMaxVariation);
    }
}