Method setupSpillData

bolt/exec/tests/SpillerTest.cpp:316–398

'numDuplicates' specifies the number of duplicate rows generated for each distinct sorting key in test.

  // 'numDuplicates' specifies the number of duplicate rows generated for each
  // distinct sorting key in test.
  void setupSpillData(
      RowTypePtr rowType,
      int32_t numKeys,
      int32_t numRows,
      int32_t numDuplicates,
      std::function<void(RowVectorPtr)> customizeData = {},
      std::vector<int> numRowsPerPartition = {}) {
    rowVector_.reset();
    rowContainer_.reset();

    if (!numRowsPerPartition.empty()) {
      int32_t totalCount = 0;
      for (auto count : numRowsPerPartition) {
        totalCount += count;
      }
      BOLT_CHECK_EQ(totalCount, numRows);
    }

    rowVector_ = BaseVector::create<RowVector>(rowType, numRows, pool_.get());
    const auto& childTypes = rowType->children();
    std::vector<TypePtr> keys(childTypes.begin(), childTypes.begin() + numKeys);
    std::vector<TypePtr> dependents;
    if (numKeys < childTypes.size()) {
      dependents.insert(
          dependents.end(), childTypes.begin() + numKeys, childTypes.end());
    }
    // Make non-join build container so that spill runs are sorted. Note
    // that a distinct or group by hash table can have dependents if
    // some keys are known to be unique by themselves. Aggregation
    // spilling will be tested separately.
    rowContainer_ = makeRowContainer(keys, dependents, false);

    if (numRows == 0 || type_ == Spiller::Type::kHashJoinProbe) {
      return;
    }
    const SelectivityVector allRows(numRows);
    // Setup temporary row to check spilling partition number.
    char* testRow = rowContainer_->newRow();
    std::vector<char*> testRows(1, testRow);
    const auto testRowSet = folly::Range<char**>(testRows.data(), 1);
    std::vector<uint64_t> hashes(1);

    int numFilledRows = 0;
    do {
      RowVectorPtr batch = makeDataset(rowType, numRows, customizeData);
      if (!numRowsPerPartition.empty()) {
        for (int index = 0; index < numRows; ++index) {
          for (int i = 0; i < keys.size(); ++i) {
            DecodedVector decodedVector(*batch->childAt(i), allRows);
            rowContainer_->store(decodedVector, index, testRow, i);
            // Calculate hashes for this batch of spill candidates.
            rowContainer_->hash(i, testRowSet, i > 0, hashes.data());
          }
          const int partitionNum =
              hashBits_.partition(hashes[0], numPartitions_);
          // Copy 'index'th row from 'batch' to 'rowVector_' with
          // 'numDuplicates' times. 'numDuplicates' is the number of duplicates
          // per each distinct row key.