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https://issues.apache.org/jira/browse/NIFI-11326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pierre Villard resolved NIFI-11326.
-----------------------------------
Resolution: Feedback Received
Apache NiFi 1.x is no longer maintained and no new release is planned on the
1.x release line. Marking as resolved as part of a cleanup operation. Please
open a new one with an updated description if this is still relevant for NiFi
2.x.
> NullPointerException in DetectDuplicate
> ---------------------------------------
>
> Key: NIFI-11326
> URL: https://issues.apache.org/jira/browse/NIFI-11326
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.19.1
> Reporter: Yury Kosharovskiy
> Priority: Major
> Attachments: image-2023-03-23-13-20-30-346.png,
> image-2023-03-23-13-28-51-443.png
>
>
> `DetectDuplicate` execution causes nondeterministic random
> `NullPointerException` in
> `org.apache.nifi.distributed.cache.client.CacheClientRequestHandler`:
> {code:java}
> final CacheClientHandshakeHandler handshakeHandler =
> channel.pipeline().get(CacheClientHandshakeHandler.class);
> // handshakeHandler is null
> handshakeHandler.waitHandshakeComplete(); {code}
> It happens once per few thousand of flow files.
> Config of associated DistributedMapCacheClientService:
> !image-2023-03-23-13-20-30-346.png!
> Config of associated DistributedMapCacheServer:
> !image-2023-03-23-13-28-51-443.png!
> Probably related tickets:
> * https://issues.apache.org/jira/browse/NIFI-9878
> *
> [https://stackoverflow.com/questions/75769450/apache-nifi-channel-unregistered-before-processing-completed]
>
>
>
>
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