Examples with RAS_Nodes org.apache.storm.scheduler.resource.RAS_Nodes used on opensource projects

Example 1 with RAS_Nodes

use of org.apache.storm.scheduler.resource.RAS_Nodes in project storm by apache.

the class TestDefaultResourceAwareStrategy method testMultipleRacks.

/**
     * Test whether strategy will choose correct rack
     */
@Test
public void testMultipleRacks() {
    final Map<String, SupervisorDetails> supMap = new HashMap<String, SupervisorDetails>();
    Map<String, Number> resourceMap = new HashMap<String, Number>();
    //generate a rack of supervisors
    resourceMap.put(Config.SUPERVISOR_CPU_CAPACITY, 400.0);
    resourceMap.put(Config.SUPERVISOR_MEMORY_CAPACITY_MB, 8000.0);
    final Map<String, SupervisorDetails> supMapRack1 = TestUtilsForResourceAwareScheduler.genSupervisors(10, 4, 0, resourceMap);
    //generate another rack of supervisors with less resources
    resourceMap.put(Config.SUPERVISOR_CPU_CAPACITY, 200.0);
    resourceMap.put(Config.SUPERVISOR_MEMORY_CAPACITY_MB, 4000.0);
    final Map<String, SupervisorDetails> supMapRack2 = TestUtilsForResourceAwareScheduler.genSupervisors(10, 4, 10, resourceMap);
    //generate some supervisors that are depleted of one resource
    resourceMap.put(Config.SUPERVISOR_CPU_CAPACITY, 0.0);
    resourceMap.put(Config.SUPERVISOR_MEMORY_CAPACITY_MB, 8000.0);
    final Map<String, SupervisorDetails> supMapRack3 = TestUtilsForResourceAwareScheduler.genSupervisors(10, 4, 20, resourceMap);
    //generate some that has alot of memory but little of cpu
    resourceMap.put(Config.SUPERVISOR_CPU_CAPACITY, 10.0);
    resourceMap.put(Config.SUPERVISOR_MEMORY_CAPACITY_MB, 8000.0 * 2 + 4000.0);
    final Map<String, SupervisorDetails> supMapRack4 = TestUtilsForResourceAwareScheduler.genSupervisors(10, 4, 30, resourceMap);
    //generate some that has alot of cpu but little of memory
    resourceMap.put(Config.SUPERVISOR_CPU_CAPACITY, 400.0 + 200.0 + 10.0);
    resourceMap.put(Config.SUPERVISOR_MEMORY_CAPACITY_MB, 1000.0);
    final Map<String, SupervisorDetails> supMapRack5 = TestUtilsForResourceAwareScheduler.genSupervisors(10, 4, 40, resourceMap);
    supMap.putAll(supMapRack1);
    supMap.putAll(supMapRack2);
    supMap.putAll(supMapRack3);
    supMap.putAll(supMapRack4);
    supMap.putAll(supMapRack5);
    Config config = new Config();
    config.putAll(Utils.readDefaultConfig());
    config.put(Config.RESOURCE_AWARE_SCHEDULER_EVICTION_STRATEGY, org.apache.storm.scheduler.resource.strategies.eviction.DefaultEvictionStrategy.class.getName());
    config.put(Config.RESOURCE_AWARE_SCHEDULER_PRIORITY_STRATEGY, org.apache.storm.scheduler.resource.strategies.priority.DefaultSchedulingPriorityStrategy.class.getName());
    config.put(Config.TOPOLOGY_SCHEDULER_STRATEGY, org.apache.storm.scheduler.resource.strategies.scheduling.DefaultResourceAwareStrategy.class.getName());
    config.put(Config.TOPOLOGY_COMPONENT_CPU_PCORE_PERCENT, 100.0);
    config.put(Config.TOPOLOGY_COMPONENT_RESOURCES_OFFHEAP_MEMORY_MB, 500);
    config.put(Config.TOPOLOGY_COMPONENT_RESOURCES_ONHEAP_MEMORY_MB, 500);
    config.put(Config.TOPOLOGY_WORKER_MAX_HEAP_SIZE_MB, Double.MAX_VALUE);
    INimbus iNimbus = new TestUtilsForResourceAwareScheduler.INimbusTest();
    Cluster cluster = new Cluster(iNimbus, supMap, new HashMap<String, SchedulerAssignmentImpl>(), config);
    //create test DNSToSwitchMapping plugin
    DNSToSwitchMapping TestNetworkTopographyPlugin = new DNSToSwitchMapping() {

        @Override
        public Map<String, String> resolve(List<String> names) {
            Map<String, String> ret = new HashMap<String, String>();
            for (SupervisorDetails sup : supMapRack1.values()) {
                ret.put(sup.getHost(), "rack-0");
            }
            for (SupervisorDetails sup : supMapRack2.values()) {
                ret.put(sup.getHost(), "rack-1");
            }
            for (SupervisorDetails sup : supMapRack3.values()) {
                ret.put(sup.getHost(), "rack-2");
            }
            for (SupervisorDetails sup : supMapRack4.values()) {
                ret.put(sup.getHost(), "rack-3");
            }
            for (SupervisorDetails sup : supMapRack5.values()) {
                ret.put(sup.getHost(), "rack-4");
            }
            return ret;
        }
    };
    List<String> supHostnames = new LinkedList<>();
    for (SupervisorDetails sup : supMap.values()) {
        supHostnames.add(sup.getHost());
    }
    Map<String, List<String>> rackToNodes = new HashMap<>();
    Map<String, String> resolvedSuperVisors = TestNetworkTopographyPlugin.resolve(supHostnames);
    for (Map.Entry<String, String> entry : resolvedSuperVisors.entrySet()) {
        String hostName = entry.getKey();
        String rack = entry.getValue();
        List<String> nodesForRack = rackToNodes.get(rack);
        if (nodesForRack == null) {
            nodesForRack = new ArrayList<String>();
            rackToNodes.put(rack, nodesForRack);
        }
        nodesForRack.add(hostName);
    }
    cluster.setNetworkTopography(rackToNodes);
    //generate topologies
    Map<String, TopologyDetails> topoMap = new HashMap<String, TopologyDetails>();
    TopologyDetails topo1 = TestUtilsForResourceAwareScheduler.getTopology("topo-1", config, 8, 0, 2, 0, currentTime - 2, 10);
    TopologyDetails topo2 = TestUtilsForResourceAwareScheduler.getTopology("topo-2", config, 8, 0, 2, 0, currentTime - 2, 10);
    topoMap.put(topo1.getId(), topo1);
    Topologies topologies = new Topologies(topoMap);
    DefaultResourceAwareStrategy rs = new DefaultResourceAwareStrategy();
    rs.prepare(new SchedulingState(new HashMap<String, User>(), cluster, topologies, config));
    TreeSet<ObjectResources> sortedRacks = rs.sortRacks(topo1.getId(), new HashMap<WorkerSlot, Collection<ExecutorDetails>>());
    Assert.assertEquals("# of racks sorted", 5, sortedRacks.size());
    Iterator<ObjectResources> it = sortedRacks.iterator();
    // Ranked first since rack-0 has the most balanced set of resources
    Assert.assertEquals("rack-0 should be ordered first", "rack-0", it.next().id);
    // Ranked second since rack-1 has a balanced set of resources but less than rack-0
    Assert.assertEquals("rack-1 should be ordered second", "rack-1", it.next().id);
    // Ranked third since rack-4 has a lot of cpu but not a lot of memory
    Assert.assertEquals("rack-4 should be ordered third", "rack-4", it.next().id);
    // Ranked fourth since rack-3 has alot of memory but not cpu
    Assert.assertEquals("rack-3 should be ordered fourth", "rack-3", it.next().id);
    //Ranked last since rack-2 has not cpu resources
    Assert.assertEquals("rack-2 should be ordered fifth", "rack-2", it.next().id);
    SchedulingResult schedulingResult = rs.schedule(topo1);
    for (Map.Entry<WorkerSlot, Collection<ExecutorDetails>> entry : schedulingResult.getSchedulingResultMap().entrySet()) {
        WorkerSlot ws = entry.getKey();
        Collection<ExecutorDetails> execs = entry.getValue();
        //make sure all workers on scheduled in rack-0
        Assert.assertEquals("assert worker scheduled on rack-0", "rack-0", resolvedSuperVisors.get(rs.idToNode(ws.getNodeId()).getHostname()));
        // make actual assignments
        cluster.assign(ws, topo1.getId(), execs);
    }
    Assert.assertEquals("All executors in topo-1 scheduled", 0, cluster.getUnassignedExecutors(topo1).size());
    //Test if topology is already partially scheduled on one rack
    topoMap.put(topo2.getId(), topo2);
    topologies = new Topologies(topoMap);
    RAS_Nodes nodes = new RAS_Nodes(cluster, topologies);
    Iterator<ExecutorDetails> executorIterator = topo2.getExecutors().iterator();
    List<String> nodeHostnames = rackToNodes.get("rack-1");
    for (int i = 0; i < topo2.getExecutors().size() / 2; i++) {
        String nodeHostname = nodeHostnames.get(i % nodeHostnames.size());
        RAS_Node node = rs.idToNode(rs.NodeHostnameToId(nodeHostname));
        WorkerSlot targetSlot = node.getFreeSlots().iterator().next();
        ExecutorDetails targetExec = executorIterator.next();
        // to keep track of free slots
        node.assign(targetSlot, topo2, Arrays.asList(targetExec));
        // to actually assign
        cluster.assign(targetSlot, topo2.getId(), Arrays.asList(targetExec));
    }
    rs = new DefaultResourceAwareStrategy();
    rs.prepare(new SchedulingState(new HashMap<String, User>(), cluster, topologies, config));
    // schedule topo2
    schedulingResult = rs.schedule(topo2);
    // checking assignments
    for (Map.Entry<WorkerSlot, Collection<ExecutorDetails>> entry : schedulingResult.getSchedulingResultMap().entrySet()) {
        WorkerSlot ws = entry.getKey();
        Collection<ExecutorDetails> execs = entry.getValue();
        //make sure all workers on scheduled in rack-1
        Assert.assertEquals("assert worker scheduled on rack-1", "rack-1", resolvedSuperVisors.get(rs.idToNode(ws.getNodeId()).getHostname()));
        // make actual assignments
        cluster.assign(ws, topo2.getId(), execs);
    }
    Assert.assertEquals("All executors in topo-2 scheduled", 0, cluster.getUnassignedExecutors(topo1).size());
}