Examples with DoubleStreamCheckpoint io.prestosql.orc.checkpoint.DoubleStreamCheckpoint used on opensource projects

Example 1 with DoubleStreamCheckpoint

use of io.prestosql.orc.checkpoint.DoubleStreamCheckpoint in project hetu-core by openlookeng.

the class DoubleColumnWriter method getIndexStreams.

@Override
public List<StreamDataOutput> getIndexStreams(CompressedMetadataWriter metadataWriter) throws IOException {
    checkState(closed);
    ImmutableList.Builder<RowGroupIndex> rowGroupIndexes = ImmutableList.builder();
    List<DoubleStreamCheckpoint> 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);
        DoubleStreamCheckpoint dataCheckpoint = dataCheckpoints.get(groupId);
        Optional<BooleanStreamCheckpoint> presentCheckpoint = presentCheckpoints.map(checkpoints -> checkpoints.get(groupId));
        List<Integer> positions = createDoubleColumnPositionList(compressed, dataCheckpoint, presentCheckpoint);
        rowGroupIndexes.add(new RowGroupIndex(positions, columnStatistics));
    }
    Slice slice = metadataWriter.writeRowIndexes(rowGroupIndexes.build());
    Stream stream = new Stream(columnId, StreamKind.ROW_INDEX, slice.length(), false);
    return ImmutableList.of(new StreamDataOutput(slice, stream));
}

Example 2 with DoubleStreamCheckpoint

use of io.prestosql.orc.checkpoint.DoubleStreamCheckpoint in project hetu-core by openlookeng.

the class DoubleOutputStream method recordCheckpoint.

@Override
public void recordCheckpoint() {
    checkState(!closed);
    checkpoints.add(new DoubleStreamCheckpoint(buffer.getCheckpoint()));
}