David Handermann created NIFI-9435:
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Summary: Add Filtering Parameters to Flow Metrics
Key: NIFI-9435
URL: https://issues.apache.org/jira/browse/NIFI-9435
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: David Handermann
Assignee: David Handermann
The NiFi REST API includes support for generating metrics using Prometheus as
the specified Producer. The current implementation gathers metrics in multiple
registries, including Process Groups, Connections, Bulletins, and Java Virtual
Machine status.
On installations with a large number of components, the metrics resource can
generate a very large amount of information, resulting in timeouts when
requesting clients have low timeout settings. In some cases, returning all
metrics may not be necessary. Adding optional filter parameters to the REST API
would support returning a smaller amount of information, providing better
support for NiFi installations with a large number of components. Potential
filtering parameters could include limiting the selected registry or metrics
component type.
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