Method EndIter

src/data/sparse_page_source.h:404–411

Call this at the last iteration (it == n_batches).

  [[nodiscard]] bool AtEnd() const override { return at_end_; }
  // Call this at the last iteration (it == n_batches).
  virtual void EndIter() {
    this->cache_info_->Commit();
    if (this->cache_info_->Size() != 0) {
      CHECK_EQ(this->count_, this->cache_info_->Size());
    }
    CHECK_GE(this->count_, 1);
    this->count_ = 0;
  }

  virtual void Reset(BatchParam const& param) {
    TryLockGuard guard{single_threaded_};