Is it possible to implement ETL with an opportunity to make changes during execution and a completely visual processing process without writing code at all?
Yes, it is. With NiFi.
Implementation of ETL is one of the most common tasks now. Creating an aggregator site or simply integrating several enterprise applications leads to the need to solve the ETL task. You can solve this problem with the help of well-known frameworks, such as Apache Camel for example. But let’s try doing it with NiFi.