Examples with ServerHolder io.druid.server.coordinator.ServerHolder used on opensource projects

Example 6 with ServerHolder

use of io.druid.server.coordinator.ServerHolder in project druid by druid-io.

the class DruidCoordinatorCleanupOvershadowed method run.

@Override
public DruidCoordinatorRuntimeParams run(DruidCoordinatorRuntimeParams params) {
    CoordinatorStats stats = new CoordinatorStats();
    // Unservice old partitions if we've had enough time to make sure we aren't flapping with old data
    if (params.hasDeletionWaitTimeElapsed()) {
        DruidCluster cluster = params.getDruidCluster();
        Map<String, VersionedIntervalTimeline<String, DataSegment>> timelines = Maps.newHashMap();
        for (MinMaxPriorityQueue<ServerHolder> serverHolders : cluster.getSortedServersByTier()) {
            for (ServerHolder serverHolder : serverHolders) {
                ImmutableDruidServer server = serverHolder.getServer();
                for (ImmutableDruidDataSource dataSource : server.getDataSources()) {
                    VersionedIntervalTimeline<String, DataSegment> timeline = timelines.get(dataSource.getName());
                    if (timeline == null) {
                        timeline = new VersionedIntervalTimeline<>(Comparators.comparable());
                        timelines.put(dataSource.getName(), timeline);
                    }
                    for (DataSegment segment : dataSource.getSegments()) {
                        timeline.add(segment.getInterval(), segment.getVersion(), segment.getShardSpec().createChunk(segment));
                    }
                }
            }
        }
        //Remove all segments in db that are overshadowed by served segments
        for (DataSegment dataSegment : params.getAvailableSegments()) {
            VersionedIntervalTimeline<String, DataSegment> timeline = timelines.get(dataSegment.getDataSource());
            if (timeline != null && timeline.isOvershadowed(dataSegment.getInterval(), dataSegment.getVersion())) {
                coordinator.removeSegment(dataSegment);
                stats.addToGlobalStat("overShadowedCount", 1);
            }
        }
    }
    return params.buildFromExisting().withCoordinatorStats(stats).build();
}

Example 7 with ServerHolder

use of io.druid.server.coordinator.ServerHolder in project druid by druid-io.

the class DruidCoordinatorLogger method run.

@Override
public DruidCoordinatorRuntimeParams run(DruidCoordinatorRuntimeParams params) {
    DruidCluster cluster = params.getDruidCluster();
    CoordinatorStats stats = params.getCoordinatorStats();
    ServiceEmitter emitter = params.getEmitter();
    Map<String, AtomicLong> assigned = stats.getPerTierStats().get("assignedCount");
    if (assigned != null) {
        for (Map.Entry<String, AtomicLong> entry : assigned.entrySet()) {
            log.info("[%s] : Assigned %s segments among %,d servers", entry.getKey(), entry.getValue().get(), cluster.get(entry.getKey()).size());
        }
    }
    emitTieredStats(emitter, "segment/assigned/count", assigned);
    Map<String, AtomicLong> dropped = stats.getPerTierStats().get("droppedCount");
    if (dropped != null) {
        for (Map.Entry<String, AtomicLong> entry : dropped.entrySet()) {
            log.info("[%s] : Dropped %s segments among %,d servers", entry.getKey(), entry.getValue().get(), cluster.get(entry.getKey()).size());
        }
    }
    emitTieredStats(emitter, "segment/dropped/count", dropped);
    emitTieredStats(emitter, "segment/cost/raw", stats.getPerTierStats().get("initialCost"));
    emitTieredStats(emitter, "segment/cost/normalization", stats.getPerTierStats().get("normalization"));
    emitTieredStats(emitter, "segment/moved/count", stats.getPerTierStats().get("movedCount"));
    emitTieredStats(emitter, "segment/deleted/count", stats.getPerTierStats().get("deletedCount"));
    Map<String, AtomicLong> normalized = stats.getPerTierStats().get("normalizedInitialCostTimesOneThousand");
    if (normalized != null) {
        emitTieredStats(emitter, "segment/cost/normalized", Maps.transformEntries(normalized, new Maps.EntryTransformer<String, AtomicLong, Number>() {

            @Override
            public Number transformEntry(String key, AtomicLong value) {
                return value.doubleValue() / 1000d;
            }
        }));
    }
    Map<String, AtomicLong> unneeded = stats.getPerTierStats().get("unneededCount");
    if (unneeded != null) {
        for (Map.Entry<String, AtomicLong> entry : unneeded.entrySet()) {
            log.info("[%s] : Removed %s unneeded segments among %,d servers", entry.getKey(), entry.getValue().get(), cluster.get(entry.getKey()).size());
        }
    }
    emitTieredStats(emitter, "segment/unneeded/count", stats.getPerTierStats().get("unneededCount"));
    emitter.emit(new ServiceMetricEvent.Builder().build("segment/overShadowed/count", stats.getGlobalStats().get("overShadowedCount")));
    Map<String, AtomicLong> moved = stats.getPerTierStats().get("movedCount");
    if (moved != null) {
        for (Map.Entry<String, AtomicLong> entry : moved.entrySet()) {
            log.info("[%s] : Moved %,d segment(s)", entry.getKey(), entry.getValue().get());
        }
    }
    final Map<String, AtomicLong> unmoved = stats.getPerTierStats().get("unmovedCount");
    if (unmoved != null) {
        for (Map.Entry<String, AtomicLong> entry : unmoved.entrySet()) {
            log.info("[%s] : Let alone %,d segment(s)", entry.getKey(), entry.getValue().get());
        }
    }
    log.info("Load Queues:");
    for (MinMaxPriorityQueue<ServerHolder> serverHolders : cluster.getSortedServersByTier()) {
        for (ServerHolder serverHolder : serverHolders) {
            ImmutableDruidServer server = serverHolder.getServer();
            LoadQueuePeon queuePeon = serverHolder.getPeon();
            log.info("Server[%s, %s, %s] has %,d left to load, %,d left to drop, %,d bytes queued, %,d bytes served.", server.getName(), server.getType(), server.getTier(), queuePeon.getSegmentsToLoad().size(), queuePeon.getSegmentsToDrop().size(), queuePeon.getLoadQueueSize(), server.getCurrSize());
            if (log.isDebugEnabled()) {
                for (DataSegment segment : queuePeon.getSegmentsToLoad()) {
                    log.debug("Segment to load[%s]", segment);
                }
                for (DataSegment segment : queuePeon.getSegmentsToDrop()) {
                    log.debug("Segment to drop[%s]", segment);
                }
            }
        }
    }
    // Emit coordinator metrics
    final Set<Map.Entry<String, LoadQueuePeon>> peonEntries = params.getLoadManagementPeons().entrySet();
    for (Map.Entry<String, LoadQueuePeon> entry : peonEntries) {
        String serverName = entry.getKey();
        LoadQueuePeon queuePeon = entry.getValue();
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.SERVER, serverName).build("segment/loadQueue/size", queuePeon.getLoadQueueSize()));
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.SERVER, serverName).build("segment/loadQueue/failed", queuePeon.getAndResetFailedAssignCount()));
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.SERVER, serverName).build("segment/loadQueue/count", queuePeon.getSegmentsToLoad().size()));
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.SERVER, serverName).build("segment/dropQueue/count", queuePeon.getSegmentsToDrop().size()));
    }
    for (Map.Entry<String, AtomicLong> entry : coordinator.getSegmentAvailability().entrySet()) {
        String datasource = entry.getKey();
        Long count = entry.getValue().get();
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.DATASOURCE, datasource).build("segment/unavailable/count", count));
    }
    for (Map.Entry<String, CountingMap<String>> entry : coordinator.getReplicationStatus().entrySet()) {
        String tier = entry.getKey();
        CountingMap<String> datasourceAvailabilities = entry.getValue();
        for (Map.Entry<String, AtomicLong> datasourceAvailability : datasourceAvailabilities.entrySet()) {
            String datasource = datasourceAvailability.getKey();
            Long count = datasourceAvailability.getValue().get();
            emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.TIER, tier).setDimension(DruidMetrics.DATASOURCE, datasource).build("segment/underReplicated/count", count));
        }
    }
    // Emit segment metrics
    CountingMap<String> segmentSizes = new CountingMap<String>();
    CountingMap<String> segmentCounts = new CountingMap<String>();
    for (DruidDataSource dataSource : params.getDataSources()) {
        for (DataSegment segment : dataSource.getSegments()) {
            segmentSizes.add(dataSource.getName(), segment.getSize());
            segmentCounts.add(dataSource.getName(), 1L);
        }
    }
    for (Map.Entry<String, Long> entry : segmentSizes.snapshot().entrySet()) {
        String dataSource = entry.getKey();
        Long size = entry.getValue();
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.DATASOURCE, dataSource).build("segment/size", size));
    }
    for (Map.Entry<String, Long> entry : segmentCounts.snapshot().entrySet()) {
        String dataSource = entry.getKey();
        Long count = entry.getValue();
        emitter.emit(new ServiceMetricEvent.Builder().setDimension(DruidMetrics.DATASOURCE, dataSource).build("segment/count", count));
    }
    return params;
}

Example 8 with ServerHolder

use of io.druid.server.coordinator.ServerHolder in project druid by druid-io.

the class LoadRule method run.

@Override
public CoordinatorStats run(DruidCoordinator coordinator, DruidCoordinatorRuntimeParams params, DataSegment segment) {
    final CoordinatorStats stats = new CoordinatorStats();
    final Set<DataSegment> availableSegments = params.getAvailableSegments();
    final Map<String, Integer> loadStatus = Maps.newHashMap();
    int totalReplicantsInCluster = params.getSegmentReplicantLookup().getTotalReplicants(segment.getIdentifier());
    for (Map.Entry<String, Integer> entry : getTieredReplicants().entrySet()) {
        final String tier = entry.getKey();
        final int expectedReplicantsInTier = entry.getValue();
        final int totalReplicantsInTier = params.getSegmentReplicantLookup().getTotalReplicants(segment.getIdentifier(), tier);
        final int loadedReplicantsInTier = params.getSegmentReplicantLookup().getLoadedReplicants(segment.getIdentifier(), tier);
        final MinMaxPriorityQueue<ServerHolder> serverQueue = params.getDruidCluster().getServersByTier(tier);
        if (serverQueue == null) {
            log.makeAlert("Tier[%s] has no servers! Check your cluster configuration!", tier).emit();
            continue;
        }
        final List<ServerHolder> serverHolderList = Lists.newArrayList(serverQueue);
        final BalancerStrategy strategy = params.getBalancerStrategy();
        if (availableSegments.contains(segment)) {
            CoordinatorStats assignStats = assign(params.getReplicationManager(), tier, totalReplicantsInCluster, expectedReplicantsInTier, totalReplicantsInTier, strategy, serverHolderList, segment);
            stats.accumulate(assignStats);
            totalReplicantsInCluster += assignStats.getPerTierStats().get(assignedCount).get(tier).get();
        }
        loadStatus.put(tier, expectedReplicantsInTier - loadedReplicantsInTier);
    }
    // Remove over-replication
    stats.accumulate(drop(loadStatus, segment, params));
    return stats;
}

Example 9 with ServerHolder

use of io.druid.server.coordinator.ServerHolder in project druid by druid-io.

the class DruidCoordinatorCleanupOvershadowedTest method testRun.

@Test
public void testRun() {
    druidCoordinatorCleanupOvershadowed = new DruidCoordinatorCleanupOvershadowed(coordinator);
    availableSegments = ImmutableList.of(segmentV1, segmentV0, segmentV2);
    druidCluster = new DruidCluster(ImmutableMap.of("normal", MinMaxPriorityQueue.orderedBy(Ordering.natural().reverse()).create(Arrays.asList(new ServerHolder(druidServer, mockPeon)))));
    EasyMock.expect(druidServer.getDataSources()).andReturn(ImmutableList.of(druidDataSource)).anyTimes();
    EasyMock.expect(druidDataSource.getSegments()).andReturn(ImmutableSet.<DataSegment>of(segmentV1, segmentV2)).anyTimes();
    EasyMock.expect(druidDataSource.getName()).andReturn("test").anyTimes();
    coordinator.removeSegment(segmentV1);
    coordinator.removeSegment(segmentV0);
    EasyMock.expectLastCall();
    EasyMock.replay(mockPeon, coordinator, druidServer, druidDataSource);
    DruidCoordinatorRuntimeParams params = DruidCoordinatorRuntimeParams.newBuilder().withAvailableSegments(availableSegments).withCoordinatorStats(new CoordinatorStats()).withDruidCluster(druidCluster).build();
    druidCoordinatorCleanupOvershadowed.run(params);
    EasyMock.verify(coordinator, druidDataSource, druidServer);
}

Example 10 with ServerHolder

use of io.druid.server.coordinator.ServerHolder in project druid by druid-io.

the class LoadRuleTest method testDrop.

@Test
public void testDrop() throws Exception {
    mockPeon.dropSegment(EasyMock.<DataSegment>anyObject(), EasyMock.<LoadPeonCallback>anyObject());
    EasyMock.expectLastCall().atLeastOnce();
    EasyMock.expect(mockPeon.getSegmentsToLoad()).andReturn(Sets.<DataSegment>newHashSet()).atLeastOnce();
    EasyMock.expect(mockPeon.getLoadQueueSize()).andReturn(0L).anyTimes();
    EasyMock.replay(mockPeon);
    LoadRule rule = new LoadRule() {

        private final Map<String, Integer> tiers = ImmutableMap.of("hot", 0, DruidServer.DEFAULT_TIER, 0);

        @Override
        public Map<String, Integer> getTieredReplicants() {
            return tiers;
        }

        @Override
        public int getNumReplicants(String tier) {
            return tiers.get(tier);
        }

        @Override
        public String getType() {
            return "test";
        }

        @Override
        public boolean appliesTo(DataSegment segment, DateTime referenceTimestamp) {
            return true;
        }

        @Override
        public boolean appliesTo(Interval interval, DateTime referenceTimestamp) {
            return true;
        }
    };
    DruidServer server1 = new DruidServer("serverHot", "hostHot", 1000, "historical", "hot", 0);
    server1.addDataSegment(segment.getIdentifier(), segment);
    DruidServer server2 = new DruidServer("serverNorm", "hostNorm", 1000, "historical", DruidServer.DEFAULT_TIER, 0);
    server2.addDataSegment(segment.getIdentifier(), segment);
    DruidCluster druidCluster = new DruidCluster(ImmutableMap.of("hot", MinMaxPriorityQueue.orderedBy(Ordering.natural().reverse()).create(Arrays.asList(new ServerHolder(server1.toImmutableDruidServer(), mockPeon))), DruidServer.DEFAULT_TIER, MinMaxPriorityQueue.orderedBy(Ordering.natural().reverse()).create(Arrays.asList(new ServerHolder(server2.toImmutableDruidServer(), mockPeon)))));
    ListeningExecutorService exec = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(1));
    BalancerStrategy balancerStrategy = new CostBalancerStrategyFactory().createBalancerStrategy(exec);
    CoordinatorStats stats = rule.run(null, DruidCoordinatorRuntimeParams.newBuilder().withDruidCluster(druidCluster).withSegmentReplicantLookup(SegmentReplicantLookup.make(druidCluster)).withReplicationManager(throttler).withBalancerStrategy(balancerStrategy).withBalancerReferenceTimestamp(new DateTime("2013-01-01")).withAvailableSegments(Arrays.asList(segment)).build(), segment);
    Assert.assertTrue(stats.getPerTierStats().get("droppedCount").get("hot").get() == 1);
    Assert.assertTrue(stats.getPerTierStats().get("droppedCount").get(DruidServer.DEFAULT_TIER).get() == 1);
    exec.shutdown();
}