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https://issues.apache.org/jira/browse/NIFI-16304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18112246#comment-18112246
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ASF subversion and git services commented on NIFI-16304:
--------------------------------------------------------

Commit 12098440a9483e838b79152b25d1e1418815cc86 in nifi's branch 
refs/heads/main from Mark Payne
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=12098440a94 ]

NIFI-16304 Retain connector verification and purge results for one minute 
(#11634)

Use the millisecond equivalent of one minute for completed configuration 
verification and FlowFile purge requests. Add a system regression verifying 
that submitting verification for another connector retains the first completed 
result.

> Connector verification results expire prematurely when another verification 
> is submitted
> ----------------------------------------------------------------------------------------
>
>                 Key: NIFI-16304
>                 URL: https://issues.apache.org/jira/browse/NIFI-16304
>             Project: Apache NiFi
>          Issue Type: Bug
>         Environment: Reproduced on Apache NiFi 2.12.0-SNAPSHOT with a system 
> test against a running standalone NiFi instance.
>            Reporter: Mark Payne
>            Assignee: Mark Payne
>            Priority: Minor
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Submitting a connector configuration verification request can prematurely 
> remove another completed verification request. Subsequent attempts to 
> retrieve that result return HTTP 404, although verification succeeded.
> {{ConnectorResource}} initializes its verification request manager with an 
> expiration value of {{1L}}. The {{AsyncRequestManager}} constructor 
> interprets this value as milliseconds. Each new submission removes completed 
> requests older than that interval.
> Ordinary submit -> poll -> delete usage works. The issue occurs when another 
> verification is submitted before the client finishes retrieving or deleting 
> an earlier result.
> *Steps to reproduce:*
> # Create two connectors.
> # Submit configuration verification A and wait for successful completion, 
> retaining the request.
> # Wait 100 ms and confirm A remains retrievable.
> # Submit configuration verification B for the other connector.
> # Retrieve A again.
> *Actual result:* HTTP 404, "Could not find a Request with identifier ...".
> *Expected result:* A remains available for the intended retention period 
> unless explicitly deleted.
> This sequence was reproduced with a system test against a running NiFi 
> instance. Both verifications succeeded; retrieving A after submitting B 
> failed with HTTP 404.
> *Proposed fix:* Pass {{TimeUnit.MINUTES.toMillis(1L)}} to the request 
> manager. The connector purge request manager uses the same incorrect {{1L}} 
> value and should also be corrected; the system-test reproduction currently 
> covers verification.



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