- Added new cluster setting `search.query.max` to limit query string length.
- Fixed multiple bugs including OOM issues, incomplete callbacks in QueryPhaseResultConsumer, and IndexOutOfBounds in terms aggregations.
- Enabled plugins to copy folders into their config directory and switched base Docker image from CentOS 8 to AlmaLinux 8 (deprecation of CentOS).
2.19.4
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Added APIs for modifying data stream backing indices, multivalue doc count aggregation, and Hive pull‑based ingestion.