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docs: Mention missed Trino PVC removal/fix in 25.7.0 release notes #776

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docs: Mention missed Trino PVC removal/fix in 25.7.0 release notes #776

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15 changes: 15 additions & 0 deletions modules/ROOT/partials/release-notes/release-25.7.adoc
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Expand Up @@ -259,6 +259,21 @@ The `-nodeport` discovery ConfigMap has been deprecated in 25.3.0 and is removed
Use the primary discovery ConfigMap instead.
See https://github.com/stackabletech/kafka-operator/pull/868[kafka-operator#868].

===== Trino

*Breaking:*
The PersistentVolumeClaims for Trino coordinator and workers have been removed because they caused problems due to storing its PID in `/stackable/data/var/run/launcher.pid`.
A forceful stop (eg. OOMKilled) could result in a leftover PID in this file.
In this case Trino would refuse startup with `ERROR: already running as 21`.
As the PersistentVolumeClaims didn't store any actual data, they have been removed.
See https://github.com/stackabletech/trino-operator/issues/768[trino-operator#768] and https://github.com/stackabletech/trino-operator/pull/769[trino-operator#769].

* Upgrading will result in an error, because Kubernetes currently does not allow changing the `volumeClaimTemplates` field.
Simply delete the mentioned StatefulSet and the operator will re-create it.
* Orphaned PVCs can be cleaned up.
Listing all Trino-related PVCs can be done using the following command: `kubectl get pvc -l app.kubernetes.io/name=trino`.
* The `.spec.coordinators|workers.config.resources.storage.data` field has been removed, as it is no longer needed.

==== Supported versions

===== Product versions
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