Function DeltaEncodeAll

be/src/benchmarks/parquet-delta-benchmark.cc:159–181

template <typename INT_T>
std::vector<uint8_t> DeltaEncodeAll(const std::vector<INT_T>& plain,
    const std::size_t block_size, const std::size_t miniblock_size) {
  const std::size_t miniblocks_in_block = block_size / miniblock_size;
  DCHECK(block_size % miniblock_size == 0);

  ParquetDeltaEncoder<INT_T> encoder;
  Status init_success = encoder.Init(block_size, miniblocks_in_block);
  DCHECK(init_success.ok());

  std::vector<uint8_t> buffer(encoder.WorstCaseOutputSize(plain.size()), 0);
  encoder.NewPage(buffer.data(), buffer.size());

  for (INT_T value : plain) {
    bool success = encoder.Put(value);
    DCHECK(success);
  }

  int written_bytes = encoder.FinalizePage();

  buffer.resize(written_bytes);

  return buffer;
}

template <typename INT_T>
std::pair<std::vector<uint8_t>, int> DictEncodeAll(const std::vector<INT_T>& plain) {