Examples with ActionBasedSegmentAllocator io.druid.indexing.appenderator.ActionBasedSegmentAllocator used on opensource projects

Example 1 with ActionBasedSegmentAllocator

use of io.druid.indexing.appenderator.ActionBasedSegmentAllocator in project druid by druid-io.

the class IndexTask method generateAndPublishSegments.

private boolean generateAndPublishSegments(final TaskToolbox toolbox, final DataSchema dataSchema, final Map<Interval, List<ShardSpec>> shardSpecs, final String version, final FirehoseFactory firehoseFactory) throws IOException, InterruptedException {
    final GranularitySpec granularitySpec = dataSchema.getGranularitySpec();
    final FireDepartment fireDepartmentForMetrics = new FireDepartment(dataSchema, new RealtimeIOConfig(null, null, null), null);
    final FireDepartmentMetrics fireDepartmentMetrics = fireDepartmentForMetrics.getMetrics();
    final Map<String, ShardSpec> sequenceNameToShardSpecMap = Maps.newHashMap();
    if (toolbox.getMonitorScheduler() != null) {
        toolbox.getMonitorScheduler().addMonitor(new RealtimeMetricsMonitor(ImmutableList.of(fireDepartmentForMetrics), ImmutableMap.of(DruidMetrics.TASK_ID, new String[] { getId() })));
    }
    final SegmentAllocator segmentAllocator;
    if (ingestionSchema.getIOConfig().isAppendToExisting()) {
        segmentAllocator = new ActionBasedSegmentAllocator(toolbox.getTaskActionClient(), dataSchema);
    } else {
        segmentAllocator = new SegmentAllocator() {

            @Override
            public SegmentIdentifier allocate(DateTime timestamp, String sequenceName, String previousSegmentId) throws IOException {
                Optional<Interval> interval = granularitySpec.bucketInterval(timestamp);
                if (!interval.isPresent()) {
                    throw new ISE("Could not find interval for timestamp [%s]", timestamp);
                }
                ShardSpec shardSpec = sequenceNameToShardSpecMap.get(sequenceName);
                if (shardSpec == null) {
                    throw new ISE("Could not find ShardSpec for sequenceName [%s]", sequenceName);
                }
                return new SegmentIdentifier(getDataSource(), interval.get(), version, shardSpec);
            }
        };
    }
    try (final Appenderator appenderator = newAppenderator(fireDepartmentMetrics, toolbox, dataSchema);
        final FiniteAppenderatorDriver driver = newDriver(appenderator, toolbox, segmentAllocator, fireDepartmentMetrics);
        final Firehose firehose = firehoseFactory.connect(dataSchema.getParser())) {
        final Supplier<Committer> committerSupplier = Committers.supplierFromFirehose(firehose);
        final Map<Interval, ShardSpecLookup> shardSpecLookups = Maps.newHashMap();
        if (driver.startJob() != null) {
            driver.clear();
        }
        try {
            while (firehose.hasMore()) {
                try {
                    final InputRow inputRow = firehose.nextRow();
                    final Optional<Interval> optInterval = granularitySpec.bucketInterval(inputRow.getTimestamp());
                    if (!optInterval.isPresent()) {
                        fireDepartmentMetrics.incrementThrownAway();
                        continue;
                    }
                    final Interval interval = optInterval.get();
                    if (!shardSpecLookups.containsKey(interval)) {
                        final List<ShardSpec> intervalShardSpecs = shardSpecs.get(interval);
                        if (intervalShardSpecs == null || intervalShardSpecs.isEmpty()) {
                            throw new ISE("Failed to get shardSpec for interval[%s]", interval);
                        }
                        shardSpecLookups.put(interval, intervalShardSpecs.get(0).getLookup(intervalShardSpecs));
                    }
                    final ShardSpec shardSpec = shardSpecLookups.get(interval).getShardSpec(inputRow.getTimestampFromEpoch(), inputRow);
                    final String sequenceName = String.format("index_%s_%s_%d", interval, version, shardSpec.getPartitionNum());
                    if (!sequenceNameToShardSpecMap.containsKey(sequenceName)) {
                        final ShardSpec shardSpecForPublishing = ingestionSchema.getTuningConfig().isForceExtendableShardSpecs() || ingestionSchema.getIOConfig().isAppendToExisting() ? new NumberedShardSpec(shardSpec.getPartitionNum(), shardSpecs.get(interval).size()) : shardSpec;
                        sequenceNameToShardSpecMap.put(sequenceName, shardSpecForPublishing);
                    }
                    final SegmentIdentifier identifier = driver.add(inputRow, sequenceName, committerSupplier);
                    if (identifier == null) {
                        throw new ISE("Could not allocate segment for row with timestamp[%s]", inputRow.getTimestamp());
                    }
                    fireDepartmentMetrics.incrementProcessed();
                } catch (ParseException e) {
                    if (ingestionSchema.getTuningConfig().isReportParseExceptions()) {
                        throw e;
                    } else {
                        fireDepartmentMetrics.incrementUnparseable();
                    }
                }
            }
        } finally {
            driver.persist(committerSupplier.get());
        }
        final TransactionalSegmentPublisher publisher = new TransactionalSegmentPublisher() {

            @Override
            public boolean publishSegments(Set<DataSegment> segments, Object commitMetadata) throws IOException {
                final SegmentTransactionalInsertAction action = new SegmentTransactionalInsertAction(segments, null, null);
                return toolbox.getTaskActionClient().submit(action).isSuccess();
            }
        };
        final SegmentsAndMetadata published = driver.finish(publisher, committerSupplier.get());
        if (published == null) {
            log.error("Failed to publish segments, aborting!");
            return false;
        } else {
            log.info("Published segments[%s]", Joiner.on(", ").join(Iterables.transform(published.getSegments(), new Function<DataSegment, String>() {

                @Override
                public String apply(DataSegment input) {
                    return input.getIdentifier();
                }
            })));
            return true;
        }
    }
}