[jira] [Commented] (NIFI-14465) NullPointerException on missing FlowFile contents in EvaluateJsonPath

["WojciechWitos (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-14465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18011406#comment-18011406 ] 

WojciechWitos commented on NIFI-14465:
--------------------------------------

[~exceptionfactory] 
!image-2025-08-01-12-07-53-767.png!

```
{code:java}
{"identifier":"ec34c820-c4b1-3d8f-a9a2-8fa5099e8d5b","instanceIdentifier":"0ebf327d-f99f-1553-a0df-6da5eaa4f3fe","name":"EvaluateJsonPath","comments":"","position":{"x":1600.0,"y":-552.0},"type":"org.apache.nifi.processors.standard.EvaluateJsonPath","bundle":{"group":"org.apache.nifi","artifact":"nifi-standard-nar","version":"2.4.0"},"properties":{"con_agentid":"$.con_agentid","Destination":"flowfile-attribute","con_destination":"$.con_destination","Max String Length":"20 MB","Return Type":"auto-detect","Null Value Representation":"empty string","con_agentname":"$.con_agentname","con_last_global_event_processed":"$.con_last_global_event_processed","Path Not Found Behavior":"ignore"},"propertyDescriptors":{"con_agentid":{"name":"con_agentid","displayName":"con_agentid","identifiesControllerService":false,"sensitive":false,"dynamic":true},"Destination":{"name":"Destination","displayName":"Destination","identifiesControllerService":false,"sensitive":false,"dynamic":false},"con_destination":{"name":"con_destination","displayName":"con_destination","identifiesControllerService":false,"sensitive":false,"dynamic":true},"Max String Length":{"name":"Max String Length","displayName":"Max String Length","identifiesControllerService":false,"sensitive":false,"dynamic":false},"Return Type":{"name":"Return Type","displayName":"Return Type","identifiesControllerService":false,"sensitive":false,"dynamic":false},"Null Value Representation":{"name":"Null Value Representation","displayName":"Null Value Representation","identifiesControllerService":false,"sensitive":false,"dynamic":false},"con_agentname":{"name":"con_agentname","displayName":"con_agentname","identifiesControllerService":false,"sensitive":false,"dynamic":true},"con_last_global_event_processed":{"name":"con_last_global_event_processed","displayName":"con_last_global_event_processed","identifiesControllerService":false,"sensitive":false,"dynamic":true},"Path Not Found Behavior":{"name":"Path Not Found Behavior","displayName":"Path Not Found Behavior","identifiesControllerService":false,"sensitive":false,"dynamic":false}},"style":{},"schedulingPeriod":"0 sec","schedulingStrategy":"TIMER_DRIVEN","executionNode":"ALL","penaltyDuration":"30 sec","yieldDuration":"1 sec","bulletinLevel":"WARN","runDurationMillis":0,"concurrentlySchedulableTaskCount":1,"autoTerminatedRelationships":["failure","unmatched"],"scheduledState":"ENABLED","retryCount":10,"retriedRelationships":[],"backoffMechanism":"PENALIZE_FLOWFILE","maxBackoffPeriod":"10 mins","componentType":"PROCESSOR","groupIdentifier":"de4e2560-d1e1-3716-9fd6-9da45b0dedb2"} {code}
This is how it looks like, but  it happens on others too. The flow above is empty, content can't by accessed anyhow.
It seems like the content has been lost during the flow? 
In version 1.28.1 this issue wasn't present and also it happens "sometimes", not on daily basis.
As I said, observed also in 2.4 as on the screenshot

> 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
>            Priority: Major
>         Attachments: image (1).png, image (2).png, image (3).png, image-2025-08-01-12-06-44-975.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!



--
This message was sent by Atlassian Jira
(v8.20.10#820010)