Method Invalidate

cpp/src/arrow/acero/asof_join_node.cc:423–423

invalidate cached hashes for batch - required when it changes only this method can be called concurrently with HashesFor

  // invalidate cached hashes for batch - required when it changes
  // only this method can be called concurrently with HashesFor
  void Invalidate() { batch_ = NULLPTR; }

  // compute and cache a hash for each row of the given batch
  const std::vector<HashType>& HashesFor(const RecordBatch* batch) {