NIFI-8269 - Add support for schema inference in ForkRecord processor when extracting array records

[pvillard31]

Summary

NIFI-8269 - Add support for schema inference in ForkRecord processor when extracting array records

At the moment the ForkRecord processor will require the writer to be configured with a schema corresponding to what will be output. We could make things more clever to inherit the schema from the reader and change it based on the operation being performed.

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  • JDK 21

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[pvillard31]

Made a small change to make sure that we compute the schema of the writer out of the schema of the reader if, and only if, the writer is configured to inherit the schema from the reader. This is not a breaking change as using the reader's schema in extract mode is not a working option today.