Examples with ImmutableBitmap io.druid.collections.bitmap.ImmutableBitmap used on opensource projects

Example 1 with ImmutableBitmap

use of io.druid.collections.bitmap.ImmutableBitmap in project druid by druid-io.

the class BoundFilterBenchmark method setup.

@Setup
public void setup() throws IOException {
    step = (END_INT - START_INT) / cardinality;
    final BitmapFactory bitmapFactory = new RoaringBitmapFactory();
    final BitmapSerdeFactory serdeFactory = new RoaringBitmapSerdeFactory(null);
    final List<Integer> ints = generateInts();
    final GenericIndexed<String> dictionary = GenericIndexed.fromIterable(FluentIterable.from(ints).transform(new Function<Integer, String>() {

        @Override
        public String apply(Integer i) {
            return i.toString();
        }
    }), GenericIndexed.STRING_STRATEGY);
    final BitmapIndex bitmapIndex = new BitmapIndexColumnPartSupplier(bitmapFactory, GenericIndexed.fromIterable(FluentIterable.from(ints).transform(new Function<Integer, ImmutableBitmap>() {

        @Override
        public ImmutableBitmap apply(Integer i) {
            final MutableBitmap mutableBitmap = bitmapFactory.makeEmptyMutableBitmap();
            mutableBitmap.add((i - START_INT) / step);
            return bitmapFactory.makeImmutableBitmap(mutableBitmap);
        }
    }), serdeFactory.getObjectStrategy()), dictionary).get();
    selector = new BitmapIndexSelector() {

        @Override
        public Indexed<String> getDimensionValues(String dimension) {
            return dictionary;
        }

        @Override
        public int getNumRows() {
            throw new UnsupportedOperationException();
        }

        @Override
        public BitmapFactory getBitmapFactory() {
            return bitmapFactory;
        }

        @Override
        public ImmutableBitmap getBitmapIndex(String dimension, String value) {
            return bitmapIndex.getBitmap(bitmapIndex.getIndex(value));
        }

        @Override
        public BitmapIndex getBitmapIndex(String dimension) {
            return bitmapIndex;
        }

        @Override
        public ImmutableRTree getSpatialIndex(String dimension) {
            throw new UnsupportedOperationException();
        }
    };
}

Example 2 with ImmutableBitmap

use of io.druid.collections.bitmap.ImmutableBitmap in project druid by druid-io.

the class BoundFilterBenchmark method matchNothingAlphaNumeric.

@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
public void matchNothingAlphaNumeric() {
    final ImmutableBitmap bitmapIndex = NOTHING_ALPHANUMERIC.getBitmapIndex(selector);
    Preconditions.checkState(bitmapIndex.size() == 0);
}

Example 3 with ImmutableBitmap

use of io.druid.collections.bitmap.ImmutableBitmap in project druid by druid-io.

the class BoundFilterBenchmark method matchHalfAlphaNumeric.

@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
public void matchHalfAlphaNumeric() {
    final ImmutableBitmap bitmapIndex = HALF_ALPHANUMERIC.getBitmapIndex(selector);
    Preconditions.checkState(bitmapIndex.size() > 0 && bitmapIndex.size() < cardinality);
}

Example 4 with ImmutableBitmap

use of io.druid.collections.bitmap.ImmutableBitmap in project druid by druid-io.

the class UseIndexesStrategy method makeTimeFilteredBitmap.

static ImmutableBitmap makeTimeFilteredBitmap(final QueryableIndex index, final Segment segment, final Filter filter, final Interval interval) {
    final BitmapFactory bitmapFactory = index.getBitmapFactoryForDimensions();
    final ImmutableBitmap baseFilter;
    if (filter == null) {
        baseFilter = null;
    } else {
        final BitmapIndexSelector selector = new ColumnSelectorBitmapIndexSelector(index.getBitmapFactoryForDimensions(), VirtualColumns.EMPTY, index);
        Preconditions.checkArgument(filter.supportsBitmapIndex(selector), "filter[%s] should support bitmap", filter);
        baseFilter = filter.getBitmapIndex(selector);
    }
    final ImmutableBitmap timeFilteredBitmap;
    if (!interval.contains(segment.getDataInterval())) {
        final MutableBitmap timeBitmap = bitmapFactory.makeEmptyMutableBitmap();
        final Column timeColumn = index.getColumn(Column.TIME_COLUMN_NAME);
        try (final GenericColumn timeValues = timeColumn.getGenericColumn()) {
            int startIndex = Math.max(0, getStartIndexOfTime(timeValues, interval.getStartMillis(), true));
            int endIndex = Math.min(timeValues.length() - 1, getStartIndexOfTime(timeValues, interval.getEndMillis(), false));
            for (int i = startIndex; i <= endIndex; i++) {
                timeBitmap.add(i);
            }
            final ImmutableBitmap finalTimeBitmap = bitmapFactory.makeImmutableBitmap(timeBitmap);
            timeFilteredBitmap = (baseFilter == null) ? finalTimeBitmap : finalTimeBitmap.intersection(baseFilter);
        }
    } else {
        timeFilteredBitmap = baseFilter;
    }
    return timeFilteredBitmap;
}

Example 5 with ImmutableBitmap

use of io.druid.collections.bitmap.ImmutableBitmap in project druid by druid-io.

the class UseIndexesStrategy method getExecutionPlan.

@Override
public List<SearchQueryExecutor> getExecutionPlan(SearchQuery query, Segment segment) {
    final ImmutableList.Builder<SearchQueryExecutor> builder = ImmutableList.builder();
    final QueryableIndex index = segment.asQueryableIndex();
    final StorageAdapter adapter = segment.asStorageAdapter();
    final List<DimensionSpec> searchDims = getDimsToSearch(adapter.getAvailableDimensions(), query.getDimensions());
    if (index != null) {
        final // pair of bitmap dims and non-bitmap dims
        Pair<List<DimensionSpec>, List<DimensionSpec>> pair = partitionDimensionList(adapter, searchDims);
        final List<DimensionSpec> bitmapSuppDims = pair.lhs;
        final List<DimensionSpec> nonBitmapSuppDims = pair.rhs;
        if (bitmapSuppDims.size() > 0) {
            final BitmapIndexSelector selector = new ColumnSelectorBitmapIndexSelector(index.getBitmapFactoryForDimensions(), VirtualColumns.EMPTY, index);
            // from the non-bitmap-support filter, and then use it to compute the filtered result by intersecting bitmaps.
            if (filter == null || filter.supportsBitmapIndex(selector)) {
                final ImmutableBitmap timeFilteredBitmap = makeTimeFilteredBitmap(index, segment, filter, interval);
                builder.add(new IndexOnlyExecutor(query, segment, timeFilteredBitmap, bitmapSuppDims));
            } else {
                // Fall back to cursor-based execution strategy
                nonBitmapSuppDims.addAll(bitmapSuppDims);
            }
        }
        if (nonBitmapSuppDims.size() > 0) {
            builder.add(new CursorBasedExecutor(query, segment, filter, interval, nonBitmapSuppDims));
        }
    } else {
        builder.add(new CursorBasedExecutor(query, segment, filter, interval, searchDims));
    }
    return builder.build();
}