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https://issues.apache.org/jira/browse/NIFI-8113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291228#comment-17291228
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ASF subversion and git services commented on NIFI-8113:
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Commit 7730777d6632590b5433442bcf90b495a1da97ee in nifi's branch
refs/heads/main from Bence Simon
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=7730777 ]
NIFI-8113 Adding persistent status history repository backed by embedded QuestDB
Signed-off-by: Mark Payne <[email protected]>
> Persisting status history
> -------------------------
>
> Key: NIFI-8113
> URL: https://issues.apache.org/jira/browse/NIFI-8113
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Core Framework
> Reporter: Simon Bence
> Assignee: Simon Bence
> Priority: Major
> Time Spent: 4h
> Remaining Estimate: 0h
>
> An alternative solution would be useful to replace/extend current in-memory
> solution for storing component and node metrics. This is in order to ease
> heap usage of NiFi which in case of high amount of processors (10-20k) might
> be significant and also to keep system information after shutting down.
> The solution should keep the data even if NiFi is stopped running and make it
> possible to read it out. It should be optimised for writing data as reading
> is much less frequent.
>
> Proposal:
> * Use QuestDB as backend
> * Add a new implementation for ComponentStatusRepository
> * Making it interchangeable between the existing and upcoming solutions
> * Provide some rollback policy in order to avoid ever-growing database
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