# CHANGELOG
All notable changes to this project are documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). See the [CONTRIBUTING guide](./CONTRIBUTING.md#Changelog) for instructions on how to add changelog entries.

## [Unreleased 3.x]
### Added
- Add support for forward translog reading ([#20163](https://github.com/opensearch-project/OpenSearch/pull/20163))
- Added public getter method in `SourceFieldMapper` to return excluded field ([#20205](https://github.com/opensearch-project/OpenSearch/pull/20205))
- Add integ test for simulating node join left event when data node cluster state publication lag because the cluster applier thread being busy ([#19907](https://github.com/opensearch-project/OpenSearch/pull/19907)).
- Relax jar hell check when extended plugins share transitive dependencies ([#20103](https://github.com/opensearch-project/OpenSearch/pull/20103))
- Added public getter method in `SourceFieldMapper` to return included field ([#20290](https://github.com/opensearch-project/OpenSearch/pull/20290))
- Support for HTTP/3 (server side) ([#20017](https://github.com/opensearch-project/OpenSearch/pull/20017))
- Add circuit breaker support for gRPC transport to prevent out-of-memory errors ([#20203](https://github.com/opensearch-project/OpenSearch/pull/20203))

### Changed
- Handle custom metadata files in subdirectory-store ([#20157](https://github.com/opensearch-project/OpenSearch/pull/20157))
- Add support for missing proto fields in GRPC FunctionScore and Highlight ([#20169](https://github.com/opensearch-project/OpenSearch/pull/20169))
- Ensure all modules are included in INTEG_TEST testcluster distribution ([#20241](https://github.com/opensearch-project/OpenSearch/pull/20241))
- Cleanup HttpServerTransport.Dispatcher in Netty tests ([#20160](https://github.com/opensearch-project/OpenSearch/pull/20160))
- Add `cluster.initial_cluster_manager_nodes` to testClusters OVERRIDABLE_SETTINGS ([#20348](https://github.com/opensearch-project/OpenSearch/pull/20348))
- Add BigInteger support for unsigned_long fields in gRPC transport ([#20346](https://github.com/opensearch-project/OpenSearch/pull/20346))
- Install demo security information when running ./gradlew run -PinstalledPlugins="['opensearch-security']" ([#20372](https://github.com/opensearch-project/OpenSearch/pull/20372))

### Fixed
- Fix bug of warm index: FullFileCachedIndexInput was closed error ([#20055](https://github.com/opensearch-project/OpenSearch/pull/20055))
- Fix flaky test ClusterMaxMergesAtOnceIT.testClusterLevelDefaultUpdatesMergePolicy ([#18056](https://github.com/opensearch-project/OpenSearch/issues/18056))
- Fix bug in Assertion framework(Yaml Rest test): numeric comparison fails when comparing Integer vs Long (or Float vs Double) ([#19376](https://github.com/opensearch-project/OpenSearch/pull/19376))
- Fix Netty deprecation warnings in transport-netty4 module ([#20233](https://github.com/opensearch-project/OpenSearch/pull/20233))
- Fix snapshot restore when an index sort is present ([#20284](https://github.com/opensearch-project/OpenSearch/pull/20284))
- Fix SearchPhaseExecutionException to properly initCause ([#20320](https://github.com/opensearch-project/OpenSearch/pull/20320))
- Fix `cluster.remote.<cluster_alias>.server_name` setting no populating SNI ([#20321](https://github.com/opensearch-project/OpenSearch/pull/20321))
- Fix X-Opaque-Id header propagation (along with other response headers) for streaming Reactor Netty 4 transport ([#20371](https://github.com/opensearch-project/OpenSearch/pull/20371))
- Fix indexing regression and bug fixes for grouping criteria. ([20145](https://github.com/opensearch-project/OpenSearch/pull/20145))

### Dependencies
- Bump `com.google.auth:google-auth-library-oauth2-http` from 1.38.0 to 1.41.0 ([#20183](https://github.com/opensearch-project/OpenSearch/pull/20183))
- Bump `actions/checkout` from 5 to 6 ([#20186](https://github.com/opensearch-project/OpenSearch/pull/20186))
- Bump `org.apache.commons:commons-configuration2` from 2.12.0 to 2.13.0 ([#20185](https://github.com/opensearch-project/OpenSearch/pull/20185), [#20184](https://github.com/opensearch-project/OpenSearch/pull/20184))
- Bump Project Reactor to 3.8.1 and Reactor Netty to 1.3.1 ([#20217](https://github.com/opensearch-project/OpenSearch/pull/20217))
- Bump OpenTelemetry to 1.57.0 and OpenTelemetry Semconv to 1.37.0 ([#20231](https://github.com/opensearch-project/OpenSearch/pull/20231))
- Bump `peter-evans/create-pull-request` from 7 to 8 ([#20236](https://github.com/opensearch-project/OpenSearch/pull/20236))
- Bump `org.apache.kerby:kerb-admin` from 2.1.0 to 2.1.1 ([#20235](https://github.com/opensearch-project/OpenSearch/pull/20235))
- Bump `org.checkerframework:checker-qual` from 3.49.0 to 3.52.1 ([#20234](https://github.com/opensearch-project/OpenSearch/pull/20234))
- Bump `netty` to 4.2.9.Final ([#20230](https://github.com/opensearch-project/OpenSearch/pull/20230))
- Bump `log4j` from 2.21.0 to 2.25.3 ([#20308](https://github.com/opensearch-project/OpenSearch/pull/20308))
- Bump `org.apache.logging.log4j:log4j-core` from 2.25.2 to 2.25.3 ([#20300](https://github.com/opensearch-project/OpenSearch/pull/20300))
- Bump `ch.qos.logback:logback-core` from 1.5.20 to 1.5.23 ([#20303](https://github.com/opensearch-project/OpenSearch/pull/20303))
- Bump `com.google.api.grpc:proto-google-iam-v1` from 1.57.0 to 1.58.2 ([#20302](https://github.com/opensearch-project/OpenSearch/pull/20302))
- Bump `actions/setup-java` from 4 to 5 ([#20304](https://github.com/opensearch-project/OpenSearch/pull/20304))
- Bump `com.squareup.okhttp3:okhttp` from 5.3.0 to 5.3.2 ([#20331](https://github.com/opensearch-project/OpenSearch/pull/20331))
- Bump `asm` from 9.7 to 9.9.1 ([#20330](https://github.com/opensearch-project/OpenSearch/pull/20330))
- Bump `actions/upload-artifact` from 5 to 6 ([#20333](https://github.com/opensearch-project/OpenSearch/pull/20333))
- Bump `com.google.http-client:google-http-client-appengine` from 2.0.2 to 2.0.3 ([#20332](https://github.com/opensearch-project/OpenSearch/pull/20332))
- Bump `jackson` from 2.18.1 to 2.20.1 ([#20343](https://github.com/opensearch-project/OpenSearch/pull/20343))
- Bump `opensearch-protobufs` from 0.24.0 to 1.0.0 and update transport-grpc module compatibility ([#20335](https://github.com/opensearch-project/OpenSearch/pull/20335))
- Bump Apache HttpClient5 to 5.6 ([#20358](https://github.com/opensearch-project/OpenSearch/pull/20358))
- Bump Apache HttpCore5 to 5.4 ([#20358](https://github.com/opensearch-project/OpenSearch/pull/20358))
- Bump `org.jsoup:jsoup` from 1.21.2 to 1.22.1 ([#20368](https://github.com/opensearch-project/OpenSearch/pull/20368))
- Bump `org.jline:jline` from 3.30.5 to 3.30.6 ([#20369](https://github.com/opensearch-project/OpenSearch/pull/20369))
- Bump `lycheeverse/lychee-action` from 2.6.1 to 2.7.0 ([#20370](https://github.com/opensearch-project/OpenSearch/pull/20370))
- Bump `opensearch-protobufs` from 1.0.0 to 1.1.0 and update transport-grpc module compatibility ([#20396](https://github.com/opensearch-project/OpenSearch/pull/20396))
- Bump `org.wiremock:wiremock-standalone` from 3.6.0 to 3.13.2 ([#20406](https://github.com/opensearch-project/OpenSearch/pull/20406))
- Bump `tj-actions/changed-files` from 47.0.0 to 47.0.1 ([#20408](https://github.com/opensearch-project/OpenSearch/pull/20408))
- Bump `reactor-netty` to 1.3.2, `reactor` to 3.8.2 ([#20419](https://github.com/opensearch-project/OpenSearch/pull/20419))

### Removed

- Remove identity-shiro from plugins folder ([#20305](https://github.com/opensearch-project/OpenSearch/pull/20305))

[Unreleased 3.x]: https://github.com/opensearch-project/OpenSearch/compare/3.4...main
