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https://issues.apache.org/jira/browse/NIFI-14465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18089866#comment-18089866
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WojciechWitos commented on NIFI-14465:
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Hi [~exceptionfactory] ,
>From our perspective it looks like MAYBE MDE blocked the files - but we have
>no logs for that - checked with MDE (antyvirus) - but even tho those flowfiles
>stay on the fron of the queue and the application is keep trying to process
>them somehow causing higher load on the clusters. It also blocks the queue, so
>events from the upper stream are being slower processed then normally, because
>those "empty" files are being tried to be processed.
In this case for us the most important is that those files go to "failure"
queue and not being keep tried to be processed if it is possible.
To the "empty" when I've tracked provenances of the flowfiles - they were empty
from the source - some might be as I said - blocked by MDE.
> NullPointerException on missing FlowFile contents in EvaluateJsonPath
> ---------------------------------------------------------------------
>
> Key: NIFI-14465
> URL: https://issues.apache.org/jira/browse/NIFI-14465
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Andrea Di Stefano
> Assignee: Daniel Stieglitz
> Priority: Major
> Attachments: image (1).png, image (2).png, image (3).png,
> image-2025-08-01-12-07-53-767.png
>
>
> Hello,
> we found an issue where a FlowFile had its content somehow deleted (we could
> not find the contents in the content repository folder), but the FlowFile
> itself was still in the queue of one processor and of course it could not be
> processed.
> The UI reported the following error:
> EvaluateJsonPath[id=648a125b-c17f-3881-8282-1048ccb1c5d7] Processing halted:
> yielding [1 sec]: java.lang.NullPointerException
> I attached some screenshot of what we saw in the UI.
> I think it can be replicated by queuing one file and manually delete the
> contents from the content repository folder.
> Shouldn't NiFi handle this situation gracefully (maybe just log a Warning and
> automatically remove the file from the queue)? Or what could we do to avoid
> the same issue in the future?
>
> Thanks!
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