John Joseph created NIFI-14797:
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Summary: ControlRate Processor sends fewer FlowFiles than expected
in NiFi 2.3 compared to NiFi 1.28
Key: NIFI-14797
URL: https://issues.apache.org/jira/browse/NIFI-14797
Project: Apache NiFi
Issue Type: Improvement
Affects Versions: 2.3.0
Reporter: John Joseph
Attachments: image-2025-07-29-11-00-05-438.png,
image-2025-07-29-11-00-53-864.png
We recently upgraded from NiFi 1.28 to NiFi 2.3 and noticed that the
*{{ControlRate}}* processor does not honor the configured rate accurately in
the new version.
In our use case, the *{{ControlRate}}* is configured with:
* Rate: 15 flowfiles/second
* Rate Controlled Criteria: {{FlowFile Count}}
* Time Duration: {{1 sec}}
However, the {*}actual average rate is observed to be lower{*}:
* 15 configured → only ~12.5 observed
* 18 configured → only ~15 observed
In NiFi 1.28, the exact configured rate was achieved. The flow design remains
unchanged, with 3-4 intermediate processors (all with 0 sec run scheduling
interval) between {{ControlRate}} and {{{}InvokeHTTP{}}}.
This appears to be a *behavioral change* in +_2.3_+
We request the team to:
* Investigate potential regressions in how {{ControlRate}} behaves in the
newer version.
* Provide guidance or improvements to ensure accurate rate control, especially
in batch/integration use cases.
+*2.3*+
!image-2025-07-29-11-00-53-864.png!
+*1.28*+
!image-2025-07-29-11-00-05-438.png!
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