Time flies so fast! We are in the middle of this book. In this chapter, we have performed the Ingest APIs and practiced most of the pipeline processors. We have also learned about data access to documents that pass through the pipeline processor. Finally, we have discussed how to handle exceptions when errors occur during pipeline processing.
In the next chapter, we will discuss how to use aggregation frameworks for exploratory data analysis. We'll give you a few examples, such as collecting metrics and log data generated by the system for operational data analytics, ingesting financial investment fund data before performing analytic operations, and performing simple sentiment analysis using Elasticsearch.
