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https://issues.apache.org/jira/browse/NIFI-14707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Secules updated NIFI-14707:
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Attachment: Screenshot 2025-07-02 at 5.33.01 PM.png
> TImedLock creates too many loggers
> ----------------------------------
>
> Key: NIFI-14707
> URL: https://issues.apache.org/jira/browse/NIFI-14707
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 2.4.0
> Reporter: Eric Secules
> Assignee: Eric Secules
> Priority: Major
> Attachments: Screenshot 2025-07-02 at 2.14.32 PM.png, Screenshot
> 2025-07-02 at 5.33.01 PM.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Affected versions: All, but I didn't know if its worth it to go and tag every
> release since the initial commit where NiFi went open source.
> Impacts:
> * Increased heap use
> * Increased time taken to upload process groups with many connected
> components
> I was investigating why it takes longer and longer to upload process groups
> containing many connected components to nifi and after taking a flamegraph I
> noticed only this call to getLogger inside `DebugEnabledTimedLock` was
> showing up. All the other loggers I see in my nifi heap dump look like they
> only go as specific as the Class name and not the specific instance. I
> believe this is leading to excess heap use and increased time uploading
> process groups containing many connected components.
> I've attached a flamegraph that I sampled when I was uploading many process
> groups with many connected components ad well as a screenshot of a heap dump
> showing all the Loggers I have allocated over 400,000 and from the spot
> checks I did, it was very hard to find one that wasn't a TimedLock logger.
> I'm looking for feedback on the correct course of action. The simplest would
> be removing the specificity and just using the logger for `TimedLock`. Or if
> we still want this specific debugging feature we could use a system property
> to gate whether we create `TimedLock` loggers with the instance ID or not.
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