What are Acknowledgment and Anchoring in the context of Storm?

In Storm mode, Acknowledgment refers to when a Spout or Bolt completes processing a message and sends an Ack message to the source, indicating successful processing. This ensures proper handling of the message and prompts the Spout or Bolt to work on the next message.

Anchoring refers to associating the processing results with the original message when handling messages, ensuring that the order and consistency of message processing is maintained even in case of errors or retries. Through Anchoring, the reliability and consistency of message processing can be ensured.