[razvan]

Description

Fixes #1726

✔️ Tested locally with the upgrade integration test and the patched 2.12.0 image:

# use the upgrade test with a locally patched image
$  ./scripts/run-tests --skip-delete --test upgrade --namespace nifi
...
--- PASS: kuttl (382.09s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/upgrade_nifi_old-2.6.0_nifi_new-2.12.0,oci.stackable.tech_sdp_nifi_2.12.0-stackable0.0.0-dev-amd64_zookeeper-latest-3.9.6_openshift-false (382.08s)
PASS

... while the flow was running:

# kill the nifi pod to trigger re-indexing
$ kubectl -n nifi delete pod test-nifi-node-default-0 --grace-period=0 --force
# grep for the relevant logs from the patch
$ kubectl -n nifi logs -f test-nifi-node-default-0 -c nifi | grep -E 'Re-indexed|re-index'
2026-10-29 11:10:57,057 INFO [main] o.a.n.p.index.lucene.LuceneEventIndex Will avoid re-indexing Provenance Events because the newest index is defunct, so it will be re-indexed in the background
2026-10-29 11:10:57,133 INFO [Re-Index Provenance Events-1] o.a.n.p.store.WriteAheadStorePartition Re-indexed 1 of 2 Files for Partition [default] including 36 Events

Definition of Done Checklist

Note

Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant.

Please make sure all these things are done and tick the boxes

• Changes are OpenShift compatible
• All added packages (via microdnf or otherwise) have a comment on why they are added
• Things not downloaded from Red Hat repositories should be mirrored in the Stackable repository and downloaded from there
• All packages should have (if available) signatures/hashes verified
• Add an entry to the CHANGELOG.md file
• Integration tests ran successfully

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

boil build <IMAGE> --image-version <RELEASE_VERSION> --strip-architecture --load
kind load docker-image <MANIFEST_URI> --name=<name-of-your-test-cluster>

See the output of boil to retrieve the image manifest URI for <MANIFEST_URI>.

[sbernauer]

Thanks!