NiFi Ingest 25.4
NiFi Ingest

# KeyViewFilterServiceImpl

Manages the location of the File Content Extraction Filter SDK for the NiFi instance. All processors that use the Filter SDK have a “KeyView Filter Service” property that must reference an instance of this service.

The service also defines a location where temporary files and extracted files are stored.

## Properties

Name | Default Value | Description
--- | --- | ---
KeyView directory | The files are automatically extracted to a subfolder of your NiFi installation. | The location of the File Content Extraction Filter binaries.
File storage directory |  | The path to a folder to use for storing temporary files and extracted files referenced in documents.
Dynamic properties |  | To modify parameters in the File Content Extraction configuration file `formats.ini`, you can use dynamic properties. The property names must be in the following format, where `section` is the name of a configuration file section, and `parameter` is the parameter name.
    kvf:[section]parameter
For example, to process PDF files using the reader `pdf2sr`, you could set the following dynamic property to the value `pdf2`:
    kvf:[Formats]230

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery NiFi Ingest 25.4

Topic Title: KeyViewFilterServiceImpl