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| 1 | +## 2024-03-21 Version 2.13.0 Release Notes |
| 2 | + |
| 3 | +## [2.13.0] |
| 4 | +### Added |
| 5 | +- [Tiered caching] Introducing cache plugins and exposing Ehcache as one of the pluggable disk cache option ([#11874](https://github.com/opensearch-project/OpenSearch/pull/11874)) |
| 6 | +- Add support for dependencies in plugin descriptor properties with semver range ([#11441](https://github.com/opensearch-project/OpenSearch/pull/11441)) |
| 7 | +- Add community_id ingest processor ([#12121](https://github.com/opensearch-project/OpenSearch/pull/12121)) |
| 8 | +- Introduce query level setting `index.query.max_nested_depth` limiting nested queries ([#3268](https://github.com/opensearch-project/OpenSearch/issues/3268) |
| 9 | +- Add toString methods to MultiSearchRequest, MultiGetRequest and CreateIndexRequest ([#12163](https://github.com/opensearch-project/OpenSearch/pull/12163)) |
| 10 | +- Fix error in RemoteSegmentStoreDirectory when debug logging is enabled ([#12328](https://github.com/opensearch-project/OpenSearch/pull/12328)) |
| 11 | +- Support for returning scores in matched queries ([#11626](https://github.com/opensearch-project/OpenSearch/pull/11626)) |
| 12 | +- Add shard id property to SearchLookup for use in field types provided by plugins ([#1063](https://github.com/opensearch-project/OpenSearch/pull/1063)) |
| 13 | +- [Tiered caching] Make IndicesRequestCache implementation configurable [EXPERIMENTAL] ([#12533](https://github.com/opensearch-project/OpenSearch/pull/12533)) |
| 14 | +- Force merge API supports performing on primary shards only ([#11269](https://github.com/opensearch-project/OpenSearch/pull/11269)) |
| 15 | +- Add kuromoji_completion analyzer and filter ([#4835](https://github.com/opensearch-project/OpenSearch/issues/4835)) |
| 16 | +- [Admission Control] Integrate IO Usage Tracker to the Resource Usage Collector Service and Emit IO Usage Stats ([#11880](https://github.com/opensearch-project/OpenSearch/pull/11880)) |
| 17 | +- The org.opensearch.bootstrap.Security should support codebase for JAR files with classifiers ([#12586](https://github.com/opensearch-project/OpenSearch/issues/12586)) |
| 18 | +- Remote reindex: Add support for configurable retry mechanism ([#12561](https://github.com/opensearch-project/OpenSearch/pull/12561)) |
| 19 | +- Tracing for deep search path ([#12103](https://github.com/opensearch-project/OpenSearch/pull/12103)) |
| 20 | +- [Metrics Framework] Adds support for asynchronous gauge metric type. ([#12642](https://github.com/opensearch-project/OpenSearch/issues/12642)) |
| 21 | +- [Tiered caching] Add Stale keys Management and CacheCleaner to IndicesRequestCache ([#12625](https://github.com/opensearch-project/OpenSearch/pull/12625)) |
| 22 | +- Make search query counters dynamic to support all query types ([#12601](https://github.com/opensearch-project/OpenSearch/pull/12601)) |
| 23 | +- [Tiered caching] Add policies controlling which values can enter pluggable caches [EXPERIMENTAL] ([#12542](https://github.com/opensearch-project/OpenSearch/pull/12542)) |
| 24 | +- [Tiered caching] Add serializer integration to allow ehcache disk cache to use non-primitive values ([#12709](https://github.com/opensearch-project/OpenSearch/pull/12709)) |
| 25 | +- [Admission Control] Integrated IO Based AdmissionController to AdmissionControl Framework ([#12583](https://github.com/opensearch-project/OpenSearch/pull/12583)) |
| 26 | +- Add Remote Store Migration Experimental flag and allow mixed mode clusters under same ([#11986](https://github.com/opensearch-project/OpenSearch/pull/11986)) |
| 27 | +- Built-in secure transports support ([#12435](https://github.com/opensearch-project/OpenSearch/pull/12435)) |
| 28 | +- Lightweight Transport action to verify local term before fetching cluster-state from remote ([#12252](https://github.com/opensearch-project/OpenSearch/pull/12252/)) |
| 29 | + |
| 30 | +### Dependencies |
| 31 | +- Bump `com.squareup.okio:okio` from 3.7.0 to 3.8.0 ([#12290](https://github.com/opensearch-project/OpenSearch/pull/12290)) |
| 32 | +- Bump `org.bouncycastle:bcprov-jdk15to18` to `org.bouncycastle:bcprov-jdk18on` version 1.77 ([#12326](https://github.com/opensearch-project/OpenSearch/pull/12326)) |
| 33 | +- Bump `org.bouncycastle:bcmail-jdk15to18` to `org.bouncycastle:bcmail-jdk18on` version 1.77 ([#12326](https://github.com/opensearch-project/OpenSearch/pull/12326)) |
| 34 | +- Bump `org.bouncycastle:bcpkix-jdk15to18` to `org.bouncycastle:bcpkix-jdk18on` version 1.77 ([#12326](https://github.com/opensearch-project/OpenSearch/pull/12326)) |
| 35 | +- Bump `gradle/wrapper-validation-action` from 1 to 2 ([#12367](https://github.com/opensearch-project/OpenSearch/pull/12367)) |
| 36 | +- Bump `netty` from 4.1.106.Final to 4.1.107.Final ([#12372](https://github.com/opensearch-project/OpenSearch/pull/12372)) |
| 37 | +- Bump `opentelemetry` from 1.34.1 to 1.36.0 ([#12388](https://github.com/opensearch-project/OpenSearch/pull/12388), [#12618](https://github.com/opensearch-project/OpenSearch/pull/12618)) |
| 38 | +- Bump Apache Lucene from 9.9.2 to 9.10.0 ([#12392](https://github.com/opensearch-project/OpenSearch/pull/12392)) |
| 39 | +- Bump `org.apache.logging.log4j:log4j-core` from 2.22.1 to 2.23.1 ([#12464](https://github.com/opensearch-project/OpenSearch/pull/12464), [#12587](https://github.com/opensearch-project/OpenSearch/pull/12587)) |
| 40 | +- Bump `antlr4` from 4.11.1 to 4.13.1 ([#12445](https://github.com/opensearch-project/OpenSearch/pull/12445)) |
| 41 | +- Bump `com.netflix.nebula.ospackage-base` from 11.8.0 to 11.8.1 ([#12461](https://github.com/opensearch-project/OpenSearch/pull/12461)) |
| 42 | +- Bump `peter-evans/create-or-update-comment` from 3 to 4 ([#12462](https://github.com/opensearch-project/OpenSearch/pull/12462)) |
| 43 | +- Bump `lycheeverse/lychee-action` from 1.9.1 to 1.9.3 ([#12521](https://github.com/opensearch-project/OpenSearch/pull/12521)) |
| 44 | +- Bump `com.azure:azure-core` from 1.39.0 to 1.47.0 ([#12520](https://github.com/opensearch-project/OpenSearch/pull/12520)) |
| 45 | +- Bump `ch.qos.logback:logback-core` from 1.2.13 to 1.5.3 ([#12519](https://github.com/opensearch-project/OpenSearch/pull/12519)) |
| 46 | +- Bump `codecov/codecov-action` from 3 to 4 ([#12585](https://github.com/opensearch-project/OpenSearch/pull/12585)) |
| 47 | +- Bump `org.apache.zookeeper:zookeeper` from 3.9.1 to 3.9.2 ([#12580](https://github.com/opensearch-project/OpenSearch/pull/12580)) |
| 48 | +- Bump `org.codehaus.woodstox:stax2-api` from 4.2.1 to 4.2.2 ([#12579](https://github.com/opensearch-project/OpenSearch/pull/12579)) |
| 49 | +- Bump Jackson version from 2.16.1 to 2.17.0 ([#12611](https://github.com/opensearch-project/OpenSearch/pull/12611), [#12662](https://github.com/opensearch-project/OpenSearch/pull/12662)) |
| 50 | +- Bump `reactor-netty` from 1.1.15 to 1.1.17 ([#12633](https://github.com/opensearch-project/OpenSearch/pull/12633)) |
| 51 | +- Bump `reactor` from 3.5.14 to 3.5.15 ([#12633](https://github.com/opensearch-project/OpenSearch/pull/12633)) |
| 52 | +- Bump `aws-sdk-java` from 2.20.55 to 2.20.86 ([#12251](https://github.com/opensearch-project/OpenSearch/pull/12251)) |
| 53 | + |
| 54 | +### Changed |
| 55 | +- Allow composite aggregation to run under a parent filter aggregation ([#11499](https://github.com/opensearch-project/OpenSearch/pull/11499)) |
| 56 | +- Quickly compute terms aggregations when the top-level query is functionally match-all for a segment ([#11643](https://github.com/opensearch-project/OpenSearch/pull/11643)) |
| 57 | +- Mark fuzzy filter GA and remove experimental setting ([12631](https://github.com/opensearch-project/OpenSearch/pull/12631)) |
| 58 | +- Keep the election scheduler open until cluster state has been applied ([#11699](https://github.com/opensearch-project/OpenSearch/pull/11699)) |
| 59 | + |
| 60 | +### Fixed |
| 61 | +- [Revert] [Bug] Check phase name before SearchRequestOperationsListener onPhaseStart ([#12035](https://github.com/opensearch-project/OpenSearch/pull/12035)) |
| 62 | +- Add support of special WrappingSearchAsyncActionPhase so the onPhaseStart() will always be followed by onPhaseEnd() within AbstractSearchAsyncAction ([#12293](https://github.com/opensearch-project/OpenSearch/pull/12293)) |
| 63 | +- Add a system property to configure YamlParser codepoint limits ([#12298](https://github.com/opensearch-project/OpenSearch/pull/12298)) |
| 64 | +- Prevent read beyond slice boundary in ByteArrayIndexInput ([#10481](https://github.com/opensearch-project/OpenSearch/issues/10481)) |
| 65 | +- Fix the "highlight.max_analyzer_offset" request parameter with "plain" highlighter ([#10919](https://github.com/opensearch-project/OpenSearch/pull/10919)) |
| 66 | +- Prevent unnecessary fetch sub phase processor initialization during fetch phase execution ([#12503](https://github.com/opensearch-project/OpenSearch/pull/12503)) |
| 67 | +- Fix `terms` query on `float` field when `doc_values` are turned off by reverting back to `FloatPoint` from `FloatField` ([#12499](https://github.com/opensearch-project/OpenSearch/pull/12499)) |
| 68 | +- Fix get task API does not refresh resource stats ([#11531](https://github.com/opensearch-project/OpenSearch/pull/11531)) |
| 69 | +- Fix for deserilization bug in weighted round-robin metadata ([#11679](https://github.com/opensearch-project/OpenSearch/pull/11679)) |
| 70 | +- onShardResult and onShardFailure are executed on one shard causes opensearch jvm crashed ([#12158](https://github.com/opensearch-project/OpenSearch/pull/12158)) |
| 71 | +- Avoid overflow when sorting missing last on `epoch_millis` datetime field ([#12676](https://github.com/opensearch-project/OpenSearch/pull/12676)) |
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