- Added major features: full Segment Replication, searchable snapshots, GeoTile and GeoHash Grid aggregations, experimental ZSTD compression, initial search pipelines, node repurpose command, and wait‑for‑completion flags on resize/open/fo...
- Introduced breaking configuration changes: disallowed multiple data paths on search nodes and removal of the deprecated `node.master`/cluster‑manager role attachment.
- Included numerous bug fixes, deprecations of Map/List/Set APIs, refactors, and extensive library dependency upgrades.
2.7.0
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Added APIs for modifying data stream backing indices, multivalue doc count aggregation, and Hive pull‑based ingestion.