Examples with MMappedQueryableSegmentizerFactory io.druid.segment.loading.MMappedQueryableSegmentizerFactory used on opensource projects

Example 1 with MMappedQueryableSegmentizerFactory

use of io.druid.segment.loading.MMappedQueryableSegmentizerFactory in project druid by druid-io.

the class IndexMergerV9 method makeIndexFiles.

@Override
protected File makeIndexFiles(final List<IndexableAdapter> adapters, final AggregatorFactory[] metricAggs, final File outDir, final ProgressIndicator progress, final List<String> mergedDimensions, final List<String> mergedMetrics, final Function<ArrayList<Iterable<Rowboat>>, Iterable<Rowboat>> rowMergerFn, final IndexSpec indexSpec) throws IOException {
    progress.start();
    progress.progress();
    List<Metadata> metadataList = Lists.transform(adapters, new Function<IndexableAdapter, Metadata>() {

        @Override
        public Metadata apply(IndexableAdapter input) {
            return input.getMetadata();
        }
    });
    Metadata segmentMetadata = null;
    if (metricAggs != null) {
        AggregatorFactory[] combiningMetricAggs = new AggregatorFactory[metricAggs.length];
        for (int i = 0; i < metricAggs.length; i++) {
            combiningMetricAggs[i] = metricAggs[i].getCombiningFactory();
        }
        segmentMetadata = Metadata.merge(metadataList, combiningMetricAggs);
    } else {
        segmentMetadata = Metadata.merge(metadataList, null);
    }
    Closer closer = Closer.create();
    try {
        final FileSmoosher v9Smoosher = new FileSmoosher(outDir);
        final File v9TmpDir = new File(outDir, "v9-tmp");
        FileUtils.forceMkdir(v9TmpDir);
        registerDeleteDirectory(closer, v9TmpDir);
        log.info("Start making v9 index files, outDir:%s", outDir);
        File tmpPeonFilesDir = new File(v9TmpDir, "tmpPeonFiles");
        FileUtils.forceMkdir(tmpPeonFilesDir);
        registerDeleteDirectory(closer, tmpPeonFilesDir);
        final IOPeon ioPeon = new TmpFileIOPeon(tmpPeonFilesDir, false);
        closer.register(ioPeon);
        long startTime = System.currentTimeMillis();
        ByteStreams.write(Ints.toByteArray(IndexIO.V9_VERSION), Files.newOutputStreamSupplier(new File(outDir, "version.bin")));
        log.info("Completed version.bin in %,d millis.", System.currentTimeMillis() - startTime);
        progress.progress();
        startTime = System.currentTimeMillis();
        try (FileOutputStream fos = new FileOutputStream(new File(outDir, "factory.json"))) {
            mapper.writeValue(fos, new MMappedQueryableSegmentizerFactory(indexIO));
        }
        log.info("Completed factory.json in %,d millis", System.currentTimeMillis() - startTime);
        progress.progress();
        final Map<String, ValueType> metricsValueTypes = Maps.newTreeMap(Ordering.<String>natural().nullsFirst());
        final Map<String, String> metricTypeNames = Maps.newTreeMap(Ordering.<String>natural().nullsFirst());
        final List<ColumnCapabilitiesImpl> dimCapabilities = Lists.newArrayListWithCapacity(mergedDimensions.size());
        mergeCapabilities(adapters, mergedDimensions, metricsValueTypes, metricTypeNames, dimCapabilities);
        final DimensionHandler[] handlers = makeDimensionHandlers(mergedDimensions, dimCapabilities);
        final List<DimensionMerger> mergers = new ArrayList<>();
        for (int i = 0; i < mergedDimensions.size(); i++) {
            mergers.add(handlers[i].makeMerger(indexSpec, v9TmpDir, ioPeon, dimCapabilities.get(i), progress));
        }
        /************* Setup Dim Conversions **************/
        progress.progress();
        startTime = System.currentTimeMillis();
        final ArrayList<Map<String, IntBuffer>> dimConversions = Lists.newArrayListWithCapacity(adapters.size());
        final ArrayList<Boolean> dimensionSkipFlag = Lists.newArrayListWithCapacity(mergedDimensions.size());
        final ArrayList<Boolean> convertMissingDimsFlags = Lists.newArrayListWithCapacity(mergedDimensions.size());
        writeDimValueAndSetupDimConversion(adapters, progress, mergedDimensions, mergers);
        log.info("Completed dim conversions in %,d millis.", System.currentTimeMillis() - startTime);
        /************* Walk through data sets, merge them, and write merged columns *************/
        progress.progress();
        final Iterable<Rowboat> theRows = makeRowIterable(adapters, mergedDimensions, mergedMetrics, rowMergerFn, dimCapabilities, handlers, mergers);
        final LongColumnSerializer timeWriter = setupTimeWriter(ioPeon, indexSpec);
        final ArrayList<GenericColumnSerializer> metWriters = setupMetricsWriters(ioPeon, mergedMetrics, metricsValueTypes, metricTypeNames, indexSpec);
        final List<IntBuffer> rowNumConversions = Lists.newArrayListWithCapacity(adapters.size());
        mergeIndexesAndWriteColumns(adapters, progress, theRows, timeWriter, metWriters, rowNumConversions, mergers);
        /************ Create Inverted Indexes and Finalize Build Columns *************/
        final String section = "build inverted index and columns";
        progress.startSection(section);
        makeTimeColumn(v9Smoosher, progress, timeWriter);
        makeMetricsColumns(v9Smoosher, progress, mergedMetrics, metricsValueTypes, metricTypeNames, metWriters);
        for (int i = 0; i < mergedDimensions.size(); i++) {
            DimensionMergerV9 merger = (DimensionMergerV9) mergers.get(i);
            merger.writeIndexes(rowNumConversions, closer);
            if (merger.canSkip()) {
                continue;
            }
            ColumnDescriptor columnDesc = merger.makeColumnDescriptor();
            makeColumn(v9Smoosher, mergedDimensions.get(i), columnDesc);
        }
        progress.stopSection(section);
        /************* Make index.drd & metadata.drd files **************/
        progress.progress();
        makeIndexBinary(v9Smoosher, adapters, outDir, mergedDimensions, mergedMetrics, progress, indexSpec, mergers);
        makeMetadataBinary(v9Smoosher, progress, segmentMetadata);
        v9Smoosher.close();
        progress.stop();
        return outDir;
    } catch (Throwable t) {
        throw closer.rethrow(t);
    } finally {
        closer.close();
    }
}