Method MaxNextLevelOverlappingBytes

src/leveldb/db/version_set.cc:1162–1177

}

int64_t VersionSet::MaxNextLevelOverlappingBytes() {
  int64_t result = 0;
  std::vector<FileMetaData*> overlaps;
  for (int level = 1; level < config::kNumLevels - 1; level++) {
    for (size_t i = 0; i < current_->files_[level].size(); i++) {
      const FileMetaData* f = current_->files_[level][i];
      current_->GetOverlappingInputs(level + 1, &f->smallest, &f->largest,
                                     &overlaps);
      const int64_t sum = TotalFileSize(overlaps);
      if (sum > result) {
        result = sum;
      }
    }
  }
  return result;
}

// Stores the minimal range that covers all entries in inputs in
// *smallest, *largest.