Method Reset

cpp/src/arrow/compute/row/grouper.cc:636–647

  }

  Status Reset() override {
    ARROW_DCHECK_EQ(temp_stack_.AllocatedSize(), 0);
    rows_.Clean();
    rows_minibatch_.Clean();
    map_.cleanup();
    RETURN_NOT_OK(map_.init(encode_ctx_.hardware_flags, ctx_->memory_pool()));
    // TODO: It is now assumed that the dictionaries_ are identical to the first batch
    // throughout the grouper's lifespan so no resetting is needed. But if we want to
    // support different dictionaries for different batches, we need to reset the
    // dictionaries_ here.
    return Status::OK();
  }

  Status Populate(const ExecSpan& batch, int64_t offset, int64_t length) override {
    return ConsumeImpl(batch, offset, length, GrouperMode::kPopulate).status();