- Workload Management gets major upgrades: new orchestrator for resiliency, QueryGroup cancellation framework, stats API, persistence across restarts, enhanced rejection, and full CRUD integration tests.
- Added offline tasks library, async S3 deletion, dynamic thread‑pool resizing, remote store metric, paginated list/indices and list/shards APIs, msearch pipeline naming, and fallback to remote cluster state on version mismatches.
- Introduced segmented cache, new phone analyzer, URI path filtering in cluster stats, alias rename during snapshot restore, numerous dependency upgrades, and a wide range of bug fixes.
2.18.0
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Added APIs for modifying data stream backing indices, multivalue doc count aggregation, and Hive pull‑based ingestion.