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https://issues.apache.org/jira/browse/NIFI-11245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Payne updated NIFI-11245:
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Issue Type: Improvement (was: Bug)
> Reducing Maximum Timer Driven Thread Count Requires Restarting
> --------------------------------------------------------------
>
> Key: NIFI-11245
> URL: https://issues.apache.org/jira/browse/NIFI-11245
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Affects Versions: 1.0.0, 1.20.0
> Reporter: David Handermann
> Assignee: David Handermann
> Priority: Minor
> Fix For: 2.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The {{Maximum Timer Driven Thread Count}} property in NiFi Controller
> Settings specifies the total number of Threads that can be spawned and
> scheduled to run Processors using the default Timer Driven strategy. This
> setting can be changed on a running system, but reducing the number requires
> restarting NiFi to apply the changes.
> The method responsible for updating the internal Thread Pool size does not
> allow reducing the core pool size at runtime, which also blocks reducing the
> Maximum Count below the default value of 10.
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