Method Reset

cpp/src/arrow/compute/kernels/vector_hash.cc:280–283

      : HashKernel(options), pool_(pool), type_(type), action_(type, options, pool) {}

  Status Reset() override {
    memo_table_.reset(new MemoTable(pool_, 0));
    return action_.Reset();
  }

  Status Append(const ArraySpan& arr) override {
    RETURN_NOT_OK(action_.Reserve(arr.length));