Examples with ColumnStatistics com.facebook.presto.orc.metadata.statistics.ColumnStatistics used on opensource projects

Example 1 with ColumnStatistics

use of com.facebook.presto.orc.metadata.statistics.ColumnStatistics in project presto by prestodb.

the class DoubleColumnWriter method finishRowGroup.

@Override
public Map<Integer, ColumnStatistics> finishRowGroup() {
    checkState(!closed);
    ColumnStatistics statistics = statisticsBuilder.buildColumnStatistics();
    rowGroupColumnStatistics.add(statistics);
    columnStatisticsRetainedSizeInBytes += statistics.getRetainedSizeInBytes();
    statisticsBuilder = new DoubleStatisticsBuilder();
    return ImmutableMap.of(column, statistics);
}

Example 2 with ColumnStatistics

use of com.facebook.presto.orc.metadata.statistics.ColumnStatistics in project presto by prestodb.

the class ListColumnWriter method getIndexStreams.

@Override
public List<StreamDataOutput> getIndexStreams() throws IOException {
    checkState(closed);
    ImmutableList.Builder<RowGroupIndex> rowGroupIndexes = ImmutableList.builder();
    List<LongStreamCheckpoint> lengthCheckpoints = lengthStream.getCheckpoints();
    Optional<List<BooleanStreamCheckpoint>> presentCheckpoints = presentStream.getCheckpoints();
    for (int i = 0; i < rowGroupColumnStatistics.size(); i++) {
        int groupId = i;
        ColumnStatistics columnStatistics = rowGroupColumnStatistics.get(groupId);
        LongStreamCheckpoint lengthCheckpoint = lengthCheckpoints.get(groupId);
        Optional<BooleanStreamCheckpoint> presentCheckpoint = presentCheckpoints.map(checkpoints -> checkpoints.get(groupId));
        List<Integer> positions = createArrayColumnPositionList(compressed, lengthCheckpoint, presentCheckpoint);
        rowGroupIndexes.add(new RowGroupIndex(positions, columnStatistics));
    }
    Slice slice = metadataWriter.writeRowIndexes(rowGroupIndexes.build());
    Stream stream = new Stream(column, StreamKind.ROW_INDEX, slice.length(), false);
    ImmutableList.Builder<StreamDataOutput> indexStreams = ImmutableList.builder();
    indexStreams.add(new StreamDataOutput(slice, stream));
    indexStreams.addAll(elementWriter.getIndexStreams());
    return indexStreams.build();
}

Example 3 with ColumnStatistics

use of com.facebook.presto.orc.metadata.statistics.ColumnStatistics in project presto by prestodb.

the class ListColumnWriter method finishRowGroup.

@Override
public Map<Integer, ColumnStatistics> finishRowGroup() {
    checkState(!closed);
    ColumnStatistics statistics = new ColumnStatistics((long) nonNullValueCount, null);
    rowGroupColumnStatistics.add(statistics);
    columnStatisticsRetainedSizeInBytes += statistics.getRetainedSizeInBytes();
    nonNullValueCount = 0;
    ImmutableMap.Builder<Integer, ColumnStatistics> columnStatistics = ImmutableMap.builder();
    columnStatistics.put(column, statistics);
    columnStatistics.putAll(elementWriter.finishRowGroup());
    return columnStatistics.build();
}

Example 4 with ColumnStatistics

use of com.facebook.presto.orc.metadata.statistics.ColumnStatistics in project presto by prestodb.

the class MapColumnWriter method getIndexStreams.

@Override
public List<StreamDataOutput> getIndexStreams() throws IOException {
    checkState(closed);
    ImmutableList.Builder<RowGroupIndex> rowGroupIndexes = ImmutableList.builder();
    List<LongStreamCheckpoint> lengthCheckpoints = lengthStream.getCheckpoints();
    Optional<List<BooleanStreamCheckpoint>> presentCheckpoints = presentStream.getCheckpoints();
    for (int i = 0; i < rowGroupColumnStatistics.size(); i++) {
        int groupId = i;
        ColumnStatistics columnStatistics = rowGroupColumnStatistics.get(groupId);
        LongStreamCheckpoint lengthCheckpoint = lengthCheckpoints.get(groupId);
        Optional<BooleanStreamCheckpoint> presentCheckpoint = presentCheckpoints.map(checkpoints -> checkpoints.get(groupId));
        List<Integer> positions = createArrayColumnPositionList(compressed, lengthCheckpoint, presentCheckpoint);
        rowGroupIndexes.add(new RowGroupIndex(positions, columnStatistics));
    }
    Slice slice = metadataWriter.writeRowIndexes(rowGroupIndexes.build());
    Stream stream = new Stream(column, StreamKind.ROW_INDEX, slice.length(), false);
    ImmutableList.Builder<StreamDataOutput> indexStreams = ImmutableList.builder();
    indexStreams.add(new StreamDataOutput(slice, stream));
    indexStreams.addAll(keyWriter.getIndexStreams());
    indexStreams.addAll(valueWriter.getIndexStreams());
    return indexStreams.build();
}

Example 5 with ColumnStatistics

use of com.facebook.presto.orc.metadata.statistics.ColumnStatistics in project presto by prestodb.

the class SliceDirectColumnWriter method getIndexStreams.

@Override
public List<StreamDataOutput> getIndexStreams() throws IOException {
    checkState(closed);
    ImmutableList.Builder<RowGroupIndex> rowGroupIndexes = ImmutableList.builder();
    List<LongStreamCheckpoint> lengthCheckpoints = lengthStream.getCheckpoints();
    List<ByteArrayStreamCheckpoint> dataCheckpoints = dataStream.getCheckpoints();
    Optional<List<BooleanStreamCheckpoint>> presentCheckpoints = presentStream.getCheckpoints();
    for (int i = 0; i < rowGroupColumnStatistics.size(); i++) {
        int groupId = i;
        ColumnStatistics columnStatistics = rowGroupColumnStatistics.get(groupId);
        LongStreamCheckpoint lengthCheckpoint = lengthCheckpoints.get(groupId);
        ByteArrayStreamCheckpoint dataCheckpoint = dataCheckpoints.get(groupId);
        Optional<BooleanStreamCheckpoint> presentCheckpoint = presentCheckpoints.map(checkpoints -> checkpoints.get(groupId));
        List<Integer> positions = createSliceColumnPositionList(compressed, lengthCheckpoint, dataCheckpoint, presentCheckpoint);
        rowGroupIndexes.add(new RowGroupIndex(positions, columnStatistics));
    }
    Slice slice = metadataWriter.writeRowIndexes(rowGroupIndexes.build());
    Stream stream = new Stream(column, StreamKind.ROW_INDEX, slice.length(), false);
    return ImmutableList.of(new StreamDataOutput(slice, stream));
}