AWS releases OpenSearch 2.5.0, which is a fork of AWS based on ElasticSearch 7.10.2 that continues to use the Apache license.

OpenSearch provides binary version downloads for Linux, Windows, BSD and Docker, address: https://opensearch.org/downloads.html

The complete ChangeLog of this version is as follows:

Added

• Prevent deletion of snapshots that are backing searchable snapshot indexes (#5365)
• Reject bulk requests with invalid actions (#5384)
• Add max_shard_size parameter for shrink API (#5229)
• Add experimental support for extensions (#5347), (#5518), (#5597), (#5615))
• Add support to register settings dynamically (#5495)
• Add auto release workflow (#5582)
• Add CI bundle pattern to distribution download (#5348)
• Experimental support for extended backward compatibility in searchable snapshots (#5429)
• Add support of default replica count cluster setting (#5610)
• Add support for refresh level durability (#5253)
• Add Request level Durability using Remote Translog functionality (#5757)
• Support to fail open requests on search shard failures with weighted traffic routing (#5072)
• Support versioning for Weighted routing apis (#5255)
• Add support for discovered cluster manager and remove local weights (#5680)
• Add new level to get health per awareness attribute in _cluster/health (#5694)

Changed

• Change http code for DecommissioningFailedException from 500 to 400 (#5283)
• Pre conditions check before updating weighted routing metadata (#4955)
• Support remote translog transfer for request level durability (#4480)
• Gracefully handle concurrent zone decommissioning action (#5542)

Deprecated

• Refactor fuzziness interface on query builders (#5433)

fixed

• Fix case sensitivity for wildcard queries (#5462)
• Apply cluster manager throttling settings during bootstrap (#5524)
• Update thresholds map when cluster manager throttling setting is removed (#5524)
• Fix backward compatibility for static cluster manager throttling threshold setting (#5633)
• Fix index exclusion behavior in snapshot restore and clone APIs (#5626)
• Fix graph filter error in search (#5665)

Dependencies

• Bumps bcpg-fips from 1.0.5.1 to 1.0.7.1 (#5148)
• Bumps commons-compress from 1.21 to 1.22 (#5104)
• Bumps geoip2 from 3.0.1 to 3.0.2 in /modules/ingest-geoip (#5201)
• Bumps gson from 2.9.0 to 2.10 in /plugins/repository-hdfs (#5184)
• Bumps protobuf-java from 3.21.8 to 3.21.9 in /test/fixtures/hdfs-fixture (#5185)
• Bumps gradle-extra-configurations-plugin from 7.0.0 to 8.0.0 (#5330)
• Bumps jcodings from 1.0.57 to 1.0.58 (#5330)
• Bumps google-http-client-jackson2 from 1.35.0 to 1.42.3 (#5330)
• Bumps azure-core from 1.33.0 to 1.34.0 (#5330)
• Bumps azure-core-http-netty from 1.12.4 to 1.12.7 (#5330)
• Bumps maxmind-db from 2.0.0 to 2.1.0 (#5330)
• Bumps json-schema-validator from 1.0.69 to 1.0.73 (#5330)
• Bumps proto-google-common-protos from 2.8.0 to 2.10.0 (#5330)
• Bumps protobuf-java from 3.21.7 to 3.21.9 (#5330)
• Bumps gradle from 7.5 to 7.6 (#5382)
• Bumps jackson from 2.14.0 to 2.14.1 (#5355)
• Bumps apache-rat from 0.13 to 0.15 (#5686)
• Bumps reactor-netty from 1.0.18 to 1.1.1 (#5685)
• Bumps gradle-info-plugin from 7.1.3 to 12.0.0 (#5684)