Fun with FileRefs – Manipulating Whole File Data
As well as parsing incoming data into records, many StreamSets Data Collector (SDC) origins can be configured to ingest Whole Files. The blog entry Whole File Transfer with StreamSets Data Collector provides a basic introduction to the concept.
Although the initial release of the Whole File feature did not allow file content to be accessed in the pipeline, we soon added the ability for Script Evaluator processors to read the file, a feature exploited in the custom processor tutorial to read metadata from incoming image files. In this blog post, I’ll show you how a custom processor can both create new records with Whole File content, and replace the content in existing records.