What does the "Incremental analytics with ingest" option do?

The "Incremental analytics with ingest" option is designed to enhance the existing dataset by incorporating new documents while maintaining the structure and mapping of the already analyzed data. This means that the system will add additional documents to the existing cluster, enriching the data without needing to reprocess everything.

In this context, incremental analytics allows for more efficient data management by offering a way to continuously update and grow the dataset as new information becomes available, rather than starting from scratch or requiring a full reanalysis of the existing data. Thus, the correct answer highlights the system’s capability to seamlessly integrate fresh data into the existing analytical framework, which is crucial for keeping the analytics relevant and up-to-date.

The other options do not align with the functionality of incremental analytics with ingest. For instance, retrieving all documents from the datasource or reanalyzing the entire dataset involve more exhaustive processes that are not characteristic of incremental approaches. Similarly, only updating existing documents suggests a limitation to updates without including new data, which is contrary to the purpose of enhancing the dataset with new items.