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## 2022-04-26 Version 2.0.0-rc1 Release Notes
### Breaking Changes in 2.0
#### Remove Mapping types
* Remove type mapping from document index API ([#2026](https://github.com/opensearch-project/OpenSearch/pull/2026))
* [Remove] Type mapping parameter from document update API ([#2204](https://github.com/opensearch-project/OpenSearch/pull/2204))
* [Remove] Types from DocWrite Request and Response ([#2239](https://github.com/opensearch-project/OpenSearch/pull/2239))
* [Remove] Types from GET/MGET ([#2168](https://github.com/opensearch-project/OpenSearch/pull/2168))
* [Remove] types from SearchHit and Explain API ([#2205](https://github.com/opensearch-project/OpenSearch/pull/2205))
* [Remove] type support from Bulk API ([#2215](https://github.com/opensearch-project/OpenSearch/pull/2215))
* Remove type end-points from no-op bulk and search action ([#2261](https://github.com/opensearch-project/OpenSearch/pull/2261))
* Remove type end-points from search and related APIs ([#2263](https://github.com/opensearch-project/OpenSearch/pull/2263))
* [Remove] Type mapping end-points from RestMultiSearchTemplateAction ([#2433](https://github.com/opensearch-project/OpenSearch/pull/2433))
* Removes type mappings from mapping APIs ([#2238](https://github.com/opensearch-project/OpenSearch/pull/2238))
* Remove type end-points from count action ([#2379](https://github.com/opensearch-project/OpenSearch/pull/2379))
* Remove type from validate query API ([#2255](https://github.com/opensearch-project/OpenSearch/pull/2255))
* [Remove] Type parameter from TermVectors API ([#2104](https://github.com/opensearch-project/OpenSearch/pull/2104))
* [Remove] types from rest-api-spec endpoints (#2689) ([#2698](https://github.com/opensearch-project/OpenSearch/pull/2698))
* [Type removal] Remove deprecation warning on use of _type in doc scripts (#2564) ([#2568](https://github.com/opensearch-project/OpenSearch/pull/2568))
* [Remove] Types from PutIndexTemplateRequest and builder to reduce mapping to a string ([#2510](https://github.com/opensearch-project/OpenSearch/pull/2510))
* [Remove] Type from Percolate query API ([#2490](https://github.com/opensearch-project/OpenSearch/pull/2490))
* [Remove] types from CreateIndexRequest and companion Builder's mapping method ([#2498](https://github.com/opensearch-project/OpenSearch/pull/2498))
* [Remove] Type from PutIndexTemplateRequest and PITRB ([#2497](https://github.com/opensearch-project/OpenSearch/pull/2497))
* [Remove] Type metadata from ingest documents ([#2491](https://github.com/opensearch-project/OpenSearch/pull/2491))
* [Remove] type from CIR.mapping and CIRB.mapping ([#2478](https://github.com/opensearch-project/OpenSearch/pull/2478))
* [Remove] types based addMapping method from CreateIndexRequest and Builder ([#2460](https://github.com/opensearch-project/OpenSearch/pull/2460))
* [Remove] type from TaskResults index and IndexMetadata.getMappings ([#2469](https://github.com/opensearch-project/OpenSearch/pull/2469))
* [Remove] Type query ([#2448](https://github.com/opensearch-project/OpenSearch/pull/2448))
* [Remove] Type from TermsLookUp ([#2459](https://github.com/opensearch-project/OpenSearch/pull/2459))
* [Remove] types from Uid and remaining types/Uid from translog ([#2450](https://github.com/opensearch-project/OpenSearch/pull/2450))
* [Remove] types from translog ([#2439](https://github.com/opensearch-project/OpenSearch/pull/2439))
* [Remove] Multiple Types from IndexTemplateMetadata ([#2400](https://github.com/opensearch-project/OpenSearch/pull/2400))
* Remove inclue_type_name parameter from rest api spec ([#2410](https://github.com/opensearch-project/OpenSearch/pull/2410))
* [Remove] include_type_name from HLRC ([#2397](https://github.com/opensearch-project/OpenSearch/pull/2397))
* [Remove] Type mappings from GeoShapeQueryBuilder ([#2322](https://github.com/opensearch-project/OpenSearch/pull/2322))
* [Remove] types from PutMappingRequest ([#2335](https://github.com/opensearch-project/OpenSearch/pull/2335))
* [Remove] deprecated getMapping API from IndicesClient ([#2262](https://github.com/opensearch-project/OpenSearch/pull/2262))
* [Remove] remaining type usage in Client and AbstractClient ([#2258](https://github.com/opensearch-project/OpenSearch/pull/2258))
* [Remove] Type from Client.prepare(Index,Delete,Update) ([#2253](https://github.com/opensearch-project/OpenSearch/pull/2253))
* [Remove] Type Specific Index Stats ([#2198](https://github.com/opensearch-project/OpenSearch/pull/2198))
* [Remove] Type from Search Internals ([#2109](https://github.com/opensearch-project/OpenSearch/pull/2109))
#### Upgrades
* [Upgrade] 1.2 BWC to Lucene 8.10.1 ([#1460](https://github.com/opensearch-project/OpenSearch/pull/1460))
* [Upgrade] Lucene 9.1 release (#2560) ([#2565](https://github.com/opensearch-project/OpenSearch/pull/2565))
* [Upgrade] Lucene 9.1.0-snapshot-ea989fe8f30 ([#2487](https://github.com/opensearch-project/OpenSearch/pull/2487))
* [Upgrade] Lucene 9.0.0 release ([#1109](https://github.com/opensearch-project/OpenSearch/pull/1109))
* Set target and source compatibility to 11, required by Lucene 9. ([#2407](https://github.com/opensearch-project/OpenSearch/pull/2407))
* Upgrade to Lucene 8.10.1 ([#1440](https://github.com/opensearch-project/OpenSearch/pull/1440))
* Upgrade to Lucene 8.9 ([#1080](https://github.com/opensearch-project/OpenSearch/pull/1080))
* Update lucene version to 8.8.2 ([#557](https://github.com/opensearch-project/OpenSearch/pull/557))
* Support Gradle 7. Fixing 'eclipse' plugin dependencies ([#1648](https://github.com/opensearch-project/OpenSearch/pull/1648))
* Update to Gradle 7.3.3 ([#1803](https://github.com/opensearch-project/OpenSearch/pull/1803))
* Support Gradle 7. More reliable tasks dependencies for Maven plugins publishing ([#1630](https://github.com/opensearch-project/OpenSearch/pull/1630))
* Support Gradle 7. Fixing publishing to Maven Local for plugins ([#1624](https://github.com/opensearch-project/OpenSearch/pull/1624))
* Support Gradle 7 ([#1609](https://github.com/opensearch-project/OpenSearch/pull/1609))
#### Deprecations
* [Remove] Deprecated Synced Flush API ([#1761](https://github.com/opensearch-project/OpenSearch/pull/1761))
* Remove deprecated search.remote settings ([#1870](https://github.com/opensearch-project/OpenSearch/pull/1870))
* [Remove] Default Mapping ([#2151](https://github.com/opensearch-project/OpenSearch/pull/2151))
* Remove Deprecated SimpleFS ([#1639](https://github.com/opensearch-project/OpenSearch/pull/1639))
* [Remove] Deprecated Zen1 Discovery ([#1216](https://github.com/opensearch-project/OpenSearch/pull/1216))
* Remove LegacyESVersion.V_6_8_x constants ([#1869](https://github.com/opensearch-project/OpenSearch/pull/1869))
* Remove LegacyESVersion.V_6_7_x constants ([#1807](https://github.com/opensearch-project/OpenSearch/pull/1807))
* Remove LegacyESVersion.V_6_6_x constants ([#1804](https://github.com/opensearch-project/OpenSearch/pull/1804))
* Remove LegacyESVersion.V_6_5_x constants ([#1794](https://github.com/opensearch-project/OpenSearch/pull/1794))
* Remove deprecated transport client ([#1781](https://github.com/opensearch-project/OpenSearch/pull/1781))
* Remove LegacyVersion.v6.4.x constants ([#1787](https://github.com/opensearch-project/OpenSearch/pull/1787))
* Remove LegacyESVersion.V_6_3_x constants ([#1691](https://github.com/opensearch-project/OpenSearch/pull/1691))
* Remove LegacyESVersion.V_6_2_x constants ([#1686](https://github.com/opensearch-project/OpenSearch/pull/1686))
* Remove LegacyESVersion.V_6_1_x constants ([#1681](https://github.com/opensearch-project/OpenSearch/pull/1681))
* Remove 6.0.* version constants ([#1658](https://github.com/opensearch-project/OpenSearch/pull/1658))
* [Remove] 6x skip from yml ([#2153](https://github.com/opensearch-project/OpenSearch/pull/2153))
### Security Fixes
* [CVE] Upgrade dependencies for Azure related plugins to mitigate CVEs ([#688](https://github.com/opensearch-project/OpenSearch/pull/688))
* [CVE] Upgrade dependencies to mitigate CVEs ([#657](https://github.com/opensearch-project/OpenSearch/pull/657))
* [CVE-2018-11765] Upgrade hadoop dependencies for hdfs plugin ([#654](https://github.com/opensearch-project/OpenSearch/pull/654))
* [CVE-2020-7692] Upgrade google-oauth clients for goolge cloud plugins ([#662](https://github.com/opensearch-project/OpenSearch/pull/662))
* [CVE-2020-36518] Update jackson-databind to 2.13.2.2 (#2599) ([#2647](https://github.com/opensearch-project/OpenSearch/pull/2647))
* Remove old ES libraries used in reindex due to CVEs ([#1359](https://github.com/opensearch-project/OpenSearch/pull/1359))
### Features/Enhancements
* Allowing custom folder name for plugin installation ([#848](https://github.com/opensearch-project/OpenSearch/pull/848))
* A CLI tool to assist during an upgrade to OpenSearch. ([#846](https://github.com/opensearch-project/OpenSearch/pull/846))
* Enable adding experimental features through sandbox modules ([#691](https://github.com/opensearch-project/OpenSearch/pull/691))
* Rank feature - unknown field linear ([#983](https://github.com/opensearch-project/OpenSearch/pull/983))
* [FEATURE] Add OPENSEARCH_JAVA_HOME env to override JAVA_HOME ([#2001](https://github.com/opensearch-project/OpenSearch/pull/2001))
* Add request parameter 'cluster_manager_timeout' and deprecate 'master_timeout' - in Ingest APIs and Script APIs (#2682) ([#2891](https://github.com/opensearch-project/OpenSearch/pull/2891))
* Change deprecation message for API parameter value 'master_node' of parameter 'metric' (#2880) ([#2882](https://github.com/opensearch-project/OpenSearch/pull/2882))
* Add request parameter 'cluster_manager_timeout' and deprecate 'master_timeout' - in Snapshot APIs (#2680) ([#2871](https://github.com/opensearch-project/OpenSearch/pull/2871))
* Add request parameter 'cluster_manager_timeout' and deprecate 'master_timeout' - in Index Template APIs (#2678) ([#2867](https://github.com/opensearch-project/OpenSearch/pull/2867))
* Add request parameter 'cluster_manager_timeout' and deprecate 'master_timeout' - in Index APIs except index template APIs (#2660) ([#2771](https://github.com/opensearch-project/OpenSearch/pull/2771))
* Add request parameter 'cluster_manager_timeout' and deprecate 'master_timeout' - in Cluster APIs (#2658) ([#2755](https://github.com/opensearch-project/OpenSearch/pull/2755))
* [Backport 2.0] Add request parameter 'cluster_manager_timeout' as the alternative for 'master_timeout', and deprecate 'master_timeout' - in CAT APIs ([#2717](https://github.com/opensearch-project/OpenSearch/pull/2717))
* Add 'cluster_manager_node' into ClusterState Metric as an alternative to 'master_node' ([#2415](https://github.com/opensearch-project/OpenSearch/pull/2415))
* Add a new node role 'cluster_manager' as the alternative for 'master' role and deprecate 'master' role ([#2424](https://github.com/opensearch-project/OpenSearch/pull/2424))
* Replace 'master' with 'cluster_manager' in 'GET Cat Nodes' API ([#2441](https://github.com/opensearch-project/OpenSearch/pull/2441))
* Replace 'discovered_master' with 'discovered_cluster_manager' in 'GET Cat Health' API ([#2438](https://github.com/opensearch-project/OpenSearch/pull/2438))
* Add a field discovered_cluster_manager in get cluster health api ([#2437](https://github.com/opensearch-project/OpenSearch/pull/2437))
* Add request parameter 'cluster_manager_timeout' as the alternative for 'master_timeout', and deprecate 'master_timeout' - in CAT Nodes API ([#2435](https://github.com/opensearch-project/OpenSearch/pull/2435))
* Add a new REST API endpoint 'GET _cat/cluster_manager' as the replacement of 'GET _cat/master' ([#2404](https://github.com/opensearch-project/OpenSearch/pull/2404))
* Deprecate setting 'cluster.no_master_block' and introduce the alternative setting 'cluster.no_cluster_manager_block' ([#2453](https://github.com/opensearch-project/OpenSearch/pull/2453))
* Deprecate setting 'cluster.service.slow_master_task_logging_threshold' and introduce the alternative setting 'cluster.service.slow_cluster_manager_task_logging_threshold' ([#2451](https://github.com/opensearch-project/OpenSearch/pull/2451))
* Deprecate setting 'cluster.initial_master_nodes' and introduce the alternative setting 'cluster.initial_cluster_manager_nodes' ([#2463](https://github.com/opensearch-project/OpenSearch/pull/2463))
* Replace remaining 'blacklist' with 'denylist' in internal class and method names (#2784) ([#2813](https://github.com/opensearch-project/OpenSearch/pull/2813))
* Centralize codes related to 'master_timeout' deprecation for eaiser removal - in CAT Nodes API (#2670) ([#2696](https://github.com/opensearch-project/OpenSearch/pull/2696))
* Make Rest-High-Rest-Level tests allow deprecation warning temporarily, during deprecation of request parameter 'master_timeout' (#2702) ([#2741](https://github.com/opensearch-project/OpenSearch/pull/2741))
* Replaced "master" terminology in Log message (#2575) ([#2594](https://github.com/opensearch-project/OpenSearch/pull/2594))
* Deprecate setting 'reindex.remote.whitelist' and introduce the alternative setting 'reindex.remote.allowlist' ([#2221](https://github.com/opensearch-project/OpenSearch/pull/2221))
* Replace exclusionary words whitelist and blacklist in the places that won't impact backwards compatibility ([#2178](https://github.com/opensearch-project/OpenSearch/pull/2178))
* Support for geo_bounding_box queries on geo_shape fields ([#2506](https://github.com/opensearch-project/OpenSearch/pull/2506))
* Support for geo_distance queries on geo_shape fields ([#2516](https://github.com/opensearch-project/OpenSearch/pull/2516))
* Add '_name' field support to score functions and provide it back in explanation response ([#2244](https://github.com/opensearch-project/OpenSearch/pull/2244))
* Add support of SOCKS proxies for S3 repository ([#2160](https://github.com/opensearch-project/OpenSearch/pull/2160))
* Case Insensitive Support in Regexp Interval ([#2237](https://github.com/opensearch-project/OpenSearch/pull/2237))
* Support unordered non-overlapping intervals ([#2103](https://github.com/opensearch-project/OpenSearch/pull/2103))
* Support _first and _last parameter for missing bucket ordering in composite aggregation ([#1942](https://github.com/opensearch-project/OpenSearch/pull/1942))
* Concurrent Searching (Experimental): modify profiling implementation to support concurrent data collection ([#1673](https://github.com/opensearch-project/OpenSearch/pull/1673))
* Changes to support retrieval of operations from translog based on specified range ([#1210](https://github.com/opensearch-project/OpenSearch/pull/1210))
* Support for translog pruning based on retention leases ([#1038](https://github.com/opensearch-project/OpenSearch/pull/1038))
* Support for bwc tests for plugins ([#1051](https://github.com/opensearch-project/OpenSearch/pull/1051))
* Part 1: Support for cancel_after_timeinterval parameter in search and msearch request ([#986](https://github.com/opensearch-project/OpenSearch/pull/986))
* alt bash path support ([#1047](https://github.com/opensearch-project/OpenSearch/pull/1047))
* Support Data Streams in OpenSearch ([#690](https://github.com/opensearch-project/OpenSearch/pull/690))
* Support for Heap after GC stats (correction after backport to 1.2.0) ([#1315](https://github.com/opensearch-project/OpenSearch/pull/1315))
* Support for Heap after GC stats ([#1265](https://github.com/opensearch-project/OpenSearch/pull/1265))
* Add deprecated API for creating History Ops Snapshot from translog (#2886) ([#2917](https://github.com/opensearch-project/OpenSearch/pull/2917))
* Introduce QueryPhaseSearcher extension point (SearchPlugin) ([#1931](https://github.com/opensearch-project/OpenSearch/pull/1931))
* Add default for EnginePlugin.getEngineFactory ([#2419](https://github.com/opensearch-project/OpenSearch/pull/2419))
* Add valuesField in PercentilesAggregationBuilder streamInput constructor ([#2308](https://github.com/opensearch-project/OpenSearch/pull/2308))
* Reintroduce negative epoch_millis #1991 ([#2232](https://github.com/opensearch-project/OpenSearch/pull/2232))
* Install plugin command help ([#2193](https://github.com/opensearch-project/OpenSearch/pull/2193))
* Always use Lucene index in peer recovery ([#2077](https://github.com/opensearch-project/OpenSearch/pull/2077))
* Add Factory to enable Lucene ConcatenateGraphFilter (#1278) ([#2152](https://github.com/opensearch-project/OpenSearch/pull/2152))
* Add proxy settings for GCS repository ([#2096](https://github.com/opensearch-project/OpenSearch/pull/2096))
* Add proxy username and password settings for Azure repository ([#2098](https://github.com/opensearch-project/OpenSearch/pull/2098))
* Add regexp interval source ([#1917](https://github.com/opensearch-project/OpenSearch/pull/1917))
* Delay the request size calculation until required by the indexing pressure framework ([#1592](https://github.com/opensearch-project/OpenSearch/pull/1592))
* Enabling Sort Optimization to make use of Lucene ([#1974](https://github.com/opensearch-project/OpenSearch/pull/1974))
* Add max_expansions option to wildcard interval ([#1916](https://github.com/opensearch-project/OpenSearch/pull/1916))
* Prefer adaptive replica selection over awareness attribute based routing ([#1107](https://github.com/opensearch-project/OpenSearch/pull/1107))
* Prioritize primary shard movement during shard allocation ([#1445](https://github.com/opensearch-project/OpenSearch/pull/1445))
* Enforce soft deletes ([#1903](https://github.com/opensearch-project/OpenSearch/pull/1903))
* Make SortBuilders pluggable ([#1856](https://github.com/opensearch-project/OpenSearch/pull/1856))
* Use try-with-resources with MockLogAppender ([#1595](https://github.com/opensearch-project/OpenSearch/pull/1595))
* Bridging the gap in network overhead measurement in the profiler ([#1360](https://github.com/opensearch-project/OpenSearch/pull/1360))
* Adding a cancelled field to tell if a cancellable task is cancelled ([#1732](https://github.com/opensearch-project/OpenSearch/pull/1732))
* Avoid logging duplicate deprecation warnings multiple times ([#1660](https://github.com/opensearch-project/OpenSearch/pull/1660))
* Added more detailed logging for SSLHandshakeException ([#1602](https://github.com/opensearch-project/OpenSearch/pull/1602))
* Rename field_masking_span to span_field_masking ([#1606](https://github.com/opensearch-project/OpenSearch/pull/1606))
* Giving informative error messages for double slashes in API call URLs ([#1568](https://github.com/opensearch-project/OpenSearch/pull/1568))
* Renaming slave to replica in filebeat-6.0.template.json file. ([#1569](https://github.com/opensearch-project/OpenSearch/pull/1569))
* Enable RestHighLevel-Client to set parameter require_alias for bulk index and reindex requests ([#1533](https://github.com/opensearch-project/OpenSearch/pull/1533))
* Improve leader node-left logging to indicate timeout/coordination state rejection ([#1584](https://github.com/opensearch-project/OpenSearch/pull/1584))
* Added logic to allow {dot} files on startup ([#1437](https://github.com/opensearch-project/OpenSearch/pull/1437))
* remove codeQL warning about implicit narrowing conversion in compound assignment ([#1403](https://github.com/opensearch-project/OpenSearch/pull/1403))
* Make TranslogDeletionPolicy abstract for extension ([#1456](https://github.com/opensearch-project/OpenSearch/pull/1456))
* Remove deprecated settings and logic for translog pruning by retention lease. ([#1416](https://github.com/opensearch-project/OpenSearch/pull/1416))
* Adjust CodeCache size to eliminate JVM warnings (and crashes) ([#1426](https://github.com/opensearch-project/OpenSearch/pull/1426))
* Add extension point for custom TranslogDeletionPolicy in EnginePlugin. ([#1404](https://github.com/opensearch-project/OpenSearch/pull/1404))
* Update node attribute check to version update (1.2) check for shard indexing pressure serialization. ([#1395](https://github.com/opensearch-project/OpenSearch/pull/1395))
* Add EngineConfig extensions to EnginePlugin ([#1387](https://github.com/opensearch-project/OpenSearch/pull/1387))
* Add Shard Level Indexing Pressure ([#1336](https://github.com/opensearch-project/OpenSearch/pull/1336))
* Making GeneralScriptException an Implementation of OpensearchWrapperException ([#1066](https://github.com/opensearch-project/OpenSearch/pull/1066))
* Handle shard over allocation during partial zone/rack or independent node failures ([#1149](https://github.com/opensearch-project/OpenSearch/pull/1149))
* Introduce FS Health HEALTHY threshold to fail stuck node ([#1167](https://github.com/opensearch-project/OpenSearch/pull/1167))
* Drop mocksocket in favour of custom security manager checks (tests only) ([#1205](https://github.com/opensearch-project/OpenSearch/pull/1205))
* Improving the Grok circular reference check to prevent stack overflow ([#1079](https://github.com/opensearch-project/OpenSearch/pull/1079))
* Introduce replaceRoutes() method and 2 new constructors to RestHandler.java ([#947](https://github.com/opensearch-project/OpenSearch/pull/947))
* Fail fast when BytesRestResponse ctor throws exception ([#923](https://github.com/opensearch-project/OpenSearch/pull/923))
* Restricting logs permissions ([#966](https://github.com/opensearch-project/OpenSearch/pull/966))
* Avoid override of routes() in BaseRestHandler to respect the default behavior defined in RestHandler ([#889](https://github.com/opensearch-project/OpenSearch/pull/889))
* Replacing docs-beta links with /docs ([#957](https://github.com/opensearch-project/OpenSearch/pull/957))
* Adding broken links checker ([#877](https://github.com/opensearch-project/OpenSearch/pull/877))
* Pass interceptor to super constructor ([#876](https://github.com/opensearch-project/OpenSearch/pull/876))
* Add 'tagline' back to MainResponse in server that was removed in PR #427 ([#913](https://github.com/opensearch-project/OpenSearch/pull/913))
* Remove distribution from main response in compatibility mode ([#898](https://github.com/opensearch-project/OpenSearch/pull/898))
* Replace metadata keys in OpenSearchException during serialization and deserialization ([#905](https://github.com/opensearch-project/OpenSearch/pull/905))
* Add cluster setting to spoof version number returned from MainResponse ([#847](https://github.com/opensearch-project/OpenSearch/pull/847))
* Add URL for lucene snapshots ([#858](https://github.com/opensearch-project/OpenSearch/pull/858))
* Decouple throttling limits for new and old indices. ([#778](https://github.com/opensearch-project/OpenSearch/pull/778))
* Verbose plugin not found exception ([#849](https://github.com/opensearch-project/OpenSearch/pull/849))
* Enable BWC checks ([#796](https://github.com/opensearch-project/OpenSearch/pull/796))
* Add a method to use fallback setting to set the memory size ([#755](https://github.com/opensearch-project/OpenSearch/pull/755))
* An allocation constraint mechanism, that de-prioritizes nodes from getting picked for allocation if they breach certain constraints ([#680](https://github.com/opensearch-project/OpenSearch/pull/680))
* Create group settings with fallback. ([#743](https://github.com/opensearch-project/OpenSearch/pull/743))
* Add timeout on cat/stats API ([#552](https://github.com/opensearch-project/OpenSearch/pull/552))
* Make allocation decisions at node level first for pending task optimi… ([#534](https://github.com/opensearch-project/OpenSearch/pull/534))
* Decouples primaries_recoveries limit from concurrent recoveries limit. ([#546](https://github.com/opensearch-project/OpenSearch/pull/546))
* Merging javadoc feature branch changes to main ([#715](https://github.com/opensearch-project/OpenSearch/pull/715))
* Add read_only block argument to opensearch-node unsafe-bootstrap command ([#599](https://github.com/opensearch-project/OpenSearch/pull/599))
* Catch runtime exceptions to make class loader race conditions easier to debug. ([#608](https://github.com/opensearch-project/OpenSearch/pull/608))
* Remove URL content from Reindex error response ([#630](https://github.com/opensearch-project/OpenSearch/pull/630))
* Standardize int, long, double and float Setting constructors. ([#665](https://github.com/opensearch-project/OpenSearch/pull/665))
* Add Remote Reindex SPI extension ([#547](https://github.com/opensearch-project/OpenSearch/pull/547))
* Make default number of shards configurable ([#625](https://github.com/opensearch-project/OpenSearch/pull/625))
* Converted all .asciidoc to .md. ([#658](https://github.com/opensearch-project/OpenSearch/pull/658))
* Make -Dtests.output=always actually work. ([#648](https://github.com/opensearch-project/OpenSearch/pull/648))
* Handle inefficiencies while fetching the delayed unassigned shards during cluster health ([#588](https://github.com/opensearch-project/OpenSearch/pull/588))
* Replace elastic.co with opensearch.org ([#611](https://github.com/opensearch-project/OpenSearch/pull/611))
* Speedup lang-painless tests ([#605](https://github.com/opensearch-project/OpenSearch/pull/605))
* Speedup snapshot stale indices delete ([#613](https://github.com/opensearch-project/OpenSearch/pull/613))
* Speed ups to test suite and precommit tasks. ([#580](https://github.com/opensearch-project/OpenSearch/pull/580))
* [Versioning] Rebase to OpenSearch version 1.0.0 ([#555](https://github.com/opensearch-project/OpenSearch/pull/555))
* Prevent setting maxParallelForks=0 on single-cpu machines ([#558](https://github.com/opensearch-project/OpenSearch/pull/558))
* Use alternate example data in OpenSearch test cases. ([#454](https://github.com/opensearch-project/OpenSearch/pull/454))
### Bug Fixes
* Adding a null pointer check to fix index_prefix query (#2879) ([#2903](https://github.com/opensearch-project/OpenSearch/pull/2903))
* Fix issue that deprecated setting 'cluster.initial_master_nodes' is not identified in node bootstrap check (#2779) ([#2794](https://github.com/opensearch-project/OpenSearch/pull/2794))
* [Bug] Fix InboundDecoder version compat check (#2570) ([#2573](https://github.com/opensearch-project/OpenSearch/pull/2573))
* Fixing PluginsServiceTests (post Lucene 9 update) ([#2484](https://github.com/opensearch-project/OpenSearch/pull/2484))
* Fixing the --release flag usage for javac (#2343) ([#2352](https://github.com/opensearch-project/OpenSearch/pull/2352))
* Fix flaky test case - string profiler via global ordinals ([#2226](https://github.com/opensearch-project/OpenSearch/pull/2226))
* Fixing the indentation in version.yml ([#2163](https://github.com/opensearch-project/OpenSearch/pull/2163))
* Fixing org.opensearch.monitor.os.OsProbeTests::testLogWarnCpuMessageOnlyOnes when CGroups are not available ([#2101](https://github.com/opensearch-project/OpenSearch/pull/2101))
* Fix integration tests failure ([#2067](https://github.com/opensearch-project/OpenSearch/pull/2067))
* Another attempt to fix o.o.transport.netty4.OpenSearchLoggingHandlerIT fails w/ stack overflow ([#2051](https://github.com/opensearch-project/OpenSearch/pull/2051))
* Fix AssertionError message ([#2044](https://github.com/opensearch-project/OpenSearch/pull/2044))
* Fix composite aggregation failed test cases introduce by missing_order parameter (#1942) ([#2005](https://github.com/opensearch-project/OpenSearch/pull/2005))
* Fixing allocation filters to persist existing state on settings update ([#1718](https://github.com/opensearch-project/OpenSearch/pull/1718))
* Fix more failing tests as a result of renaming ([#457](https://github.com/opensearch-project/OpenSearch/pull/457))
* Fix failing rest-api-spec tests as part of renaming. ([#451](https://github.com/opensearch-project/OpenSearch/pull/451))
* Fix multiple failing server tests. ([#453](https://github.com/opensearch-project/OpenSearch/pull/453))
* [TEST] Fix FsHealthServiceTest by increasing the timeout period before checking the FS health after restoring the FS status ([#1813](https://github.com/opensearch-project/OpenSearch/pull/1813))
* [BUG] Wait for outstanding requests to complete in LastSuccessfulSett… ([#1939](https://github.com/opensearch-project/OpenSearch/pull/1939))
* [Bug] Wait for outstanding requests to complete ([#1925](https://github.com/opensearch-project/OpenSearch/pull/1925))
* [BUG] Serialization bugs can cause node drops ([#1885](https://github.com/opensearch-project/OpenSearch/pull/1885))
* [BUG] Docker distribution builds are failing. Switching to http://vault.centos.org ([#2024](https://github.com/opensearch-project/OpenSearch/pull/2024))
* [BUG] SymbolicLinkPreservingUntarTransform fails on Windows ([#1433](https://github.com/opensearch-project/OpenSearch/pull/1433))
* [BUG] ConcurrentSnapshotsIT#testAssertMultipleSnapshotsAndPrimaryFailOver fails intermittently ([#1311](https://github.com/opensearch-project/OpenSearch/pull/1311))
* [Bug] Fix InstallPluginCommand to use proper key signatures ([#1233](https://github.com/opensearch-project/OpenSearch/pull/1233))
* [Bug] Fix mixed cluster support for OpenSearch 2+ ([#1191](https://github.com/opensearch-project/OpenSearch/pull/1191))
* [BUG] Fix cat.health test failures in pre 1.0.0 mixed cluster test ([#928](https://github.com/opensearch-project/OpenSearch/pull/928))
* [BUG] Fix versioning issues discovered through version bump ([#884](https://github.com/opensearch-project/OpenSearch/pull/884))
* [BUG] fix MainResponse to spoof version number for legacy clients ([#708](https://github.com/opensearch-project/OpenSearch/pull/708))
* [Bug] Fix gradle build on Windows failing from a recent change ([#758](https://github.com/opensearch-project/OpenSearch/pull/758))
* Apply fix for health API response to distinguish no master ([#656](https://github.com/opensearch-project/OpenSearch/pull/656))
* Rename translog pruning setting to CCR specific setting and addressed Bug in the test case ([#1243](https://github.com/opensearch-project/OpenSearch/pull/1243))
* fix gradle check fail due to renameing -min in #1094 ([#1289](https://github.com/opensearch-project/OpenSearch/pull/1289))
* Added explicit 'null' check for response listener to prevent obscure NullPointerException issues (#3048) ([#3050](https://github.com/opensearch-project/OpenSearch/pull/3050))
* [Backport] [2.0] Bugfix to guard against stack overflow errors caused by very large reg-ex input ([#2816](https://github.com/opensearch-project/OpenSearch/pull/2816))
* [Bug] Change 1.0.0 version check in PluginInfo
* TEST BUG: MergeSchedulerSettingsTests fails always on small machines ([#559](https://github.com/opensearch-project/OpenSearch/pull/559))
* Fix bwcVersions after bumping version 1.3.1 ([#2532](https://github.com/opensearch-project/OpenSearch/pull/2532))
* Fixing bwcVersions and bwc builds (#2430) - adding 1.4.0 into main bwcVersions
* Fixing invalid Java code example in JavaDoc ([#2008](https://github.com/opensearch-project/OpenSearch/pull/2008))
* Fixing org.opensearch.common.network.InetAddressesTests.testForStringIPv6WithScopeIdInput ([#1913](https://github.com/opensearch-project/OpenSearch/pull/1913))
* Fix o.o.transport.netty4.OpenSearchLoggingHandlerIT stack overflow test failure ([#1900](https://github.com/opensearch-project/OpenSearch/pull/1900))
* Fix verifyVersions gradle task and cleanup bwcVersions ([#1878](https://github.com/opensearch-project/OpenSearch/pull/1878))
* Attempt to fix :test:fixtures:s3-fixture:composeUp fails due to HTTP connection issue ([#1866](https://github.com/opensearch-project/OpenSearch/pull/1866))
* Fixing build failures after Flavor Serialization backport ([#1867](https://github.com/opensearch-project/OpenSearch/pull/1867))
* Fixing auto backport workflow ([#1845](https://github.com/opensearch-project/OpenSearch/pull/1845))
* Upgrade and fix link checker to 1.2. ([#1811](https://github.com/opensearch-project/OpenSearch/pull/1811))
* link checker fix - only run on opensearch-project/OpenSearch ([#1719](https://github.com/opensearch-project/OpenSearch/pull/1719))
* Fixing .gitattributes for binary content, removing *.class files ([#1717](https://github.com/opensearch-project/OpenSearch/pull/1717))
* Fix unit test testFailsHealthOnHungIOBeyondHealthyTimeout() by incresing the max waiting time before assertion ([#1692](https://github.com/opensearch-project/OpenSearch/pull/1692))
* Fixing bwc test for repository-multi-version ([#1441](https://github.com/opensearch-project/OpenSearch/pull/1441))
* Fixing support for a multi-node cluster via "gradle run" ([#1455](https://github.com/opensearch-project/OpenSearch/pull/1455))
* Fix windows build (mostly) ([#1412](https://github.com/opensearch-project/OpenSearch/pull/1412))
* Fixing post merge 3rd party audit issues ([#1384](https://github.com/opensearch-project/OpenSearch/pull/1384))
* Minor fix for the flaky test to reduce concurrency (#1361) ([#1364](https://github.com/opensearch-project/OpenSearch/pull/1364))
* Fixing org.opensearch.repositories.azure.AzureBlobContainerRetriesTests and org.opensearch.action.admin.cluster.node.stats.NodeStatsTests ([#1390](https://github.com/opensearch-project/OpenSearch/pull/1390))
* Fix failure in SearchCancellationIT.testMSearchChildReqCancellationWithHybridTimeout ([#1103](https://github.com/opensearch-project/OpenSearch/pull/1103))
* Fix failing test caused by versioning change. ([#598](https://github.com/opensearch-project/OpenSearch/pull/598))
* fixed broken anchor link. ([#436](https://github.com/opensearch-project/OpenSearch/pull/436))
* [Rename] fix painless test ([#446](https://github.com/opensearch-project/OpenSearch/pull/446))
* Fix name of the log appender. ([#445](https://github.com/opensearch-project/OpenSearch/pull/445))
* [Rename] Fixing lingering rename and ./gradlew run will start ([#443](https://github.com/opensearch-project/OpenSearch/pull/443))
* Fixed copyright to OpenSearch ([#1175](https://github.com/opensearch-project/OpenSearch/pull/1175))
* Fix defects in code-coverage.gralde to generate code coverage report properly ([#1214](https://github.com/opensearch-project/OpenSearch/pull/1214))
* Fix failure in SearchCancellationIT.testMSearchChildReqCancellationWithHybridTimeout ([#1103](https://github.com/opensearch-project/OpenSearch/pull/1103))
* Fix Snapshot pattern in DistributionDownloader. ([#916](https://github.com/opensearch-project/OpenSearch/pull/916))
* Fix stragglers from renaming to OpenSearch work. ([#483](https://github.com/opensearch-project/OpenSearch/pull/483))
* Fix rename issues and failing repository-hdfs tests. ([#518](https://github.com/opensearch-project/OpenSearch/pull/518))
* Fix build-tools integ test failures. ([#465](https://github.com/opensearch-project/OpenSearch/pull/465))
* Fix a few more renaming issues. ([#464](https://github.com/opensearch-project/OpenSearch/pull/464))
* Fix org.opensearch.index.reindex.ReindexRestClientSslTests#testClientSucceedsWithCertificateAuthorities - javax.net.ssl.SSLPeerUnverifiedException ([#1212](https://github.com/opensearch-project/OpenSearch/pull/1212))
* Fix opensearch-env always sources the environment from hardcoded file ([#875](https://github.com/opensearch-project/OpenSearch/pull/875))
* Fix resource leak issues suggested by Amazon CodeGuru ([#816](https://github.com/opensearch-project/OpenSearch/pull/816))
* Fix arm architecture translation issue ([#809](https://github.com/opensearch-project/OpenSearch/pull/809))
* Fix Javadoc errors in `client/sniffer` ([#802](https://github.com/opensearch-project/OpenSearch/pull/802))
* [BWC] fix mixedCluster and rolling upgrades ([#775](https://github.com/opensearch-project/OpenSearch/pull/775))
* Fix #649: Properly escape @ in JavaDoc. ([#651](https://github.com/opensearch-project/OpenSearch/pull/651))
* Fix snapshot deletion task getting stuck in the event of exceptions ([#629](https://github.com/opensearch-project/OpenSearch/pull/629))
* Fix failing test caused by versioning change. ([#598](https://github.com/opensearch-project/OpenSearch/pull/598))
* Use the correct domain to fix failing integration tests. ([#519](https://github.com/opensearch-project/OpenSearch/pull/519))
* Change OpenSearch Version to OpenSearch version to fix failed test case org.opensearch.plugins.ListPluginsCommandTests.testPluginWithNativeController ([#460](https://github.com/opensearch-project/OpenSearch/pull/460))
* [Rename] Fix env variables and old es maven repo ([#439](https://github.com/opensearch-project/OpenSearch/pull/439))
* ignore_malformed parameter on ip_range data_type throws mapper_parsing_exception ([#2429](https://github.com/opensearch-project/OpenSearch/pull/2429))
* Discrepancy in result from _validate/query API and actual query validity ([#2416](https://github.com/opensearch-project/OpenSearch/pull/2416))
* MapperService has to be passed in as null for EnginePlugins CodecService constructor ([#2177](https://github.com/opensearch-project/OpenSearch/pull/2177))
* Adding shards per node constraint for predictability to testClusterGr… ([#2110](https://github.com/opensearch-project/OpenSearch/pull/2110))
* Mapping update for “date_range” field type is not idempotent ([#2094](https://github.com/opensearch-project/OpenSearch/pull/2094))
* Use Version.compareMajor instead of using equals operator ([#1876](https://github.com/opensearch-project/OpenSearch/pull/1876))
* Execution failed for task ':test:fixtures:azure/s3/hdfs/gcs-fixture:composeDown' ([#1824](https://github.com/opensearch-project/OpenSearch/pull/1824))
* RestIntegTestTask fails because of missed log4j-core dependency ([#1815](https://github.com/opensearch-project/OpenSearch/pull/1815))
* Start MockLogAppender before adding to static context ([#1587](https://github.com/opensearch-project/OpenSearch/pull/1587))
* Use a non-default port for upgrade-cli unit tests ([#1512](https://github.com/opensearch-project/OpenSearch/pull/1512))
* Close first engine instance before creating second ([#1457](https://github.com/opensearch-project/OpenSearch/pull/1457))
* Avoid crashing on using the index.lifecycle.name in the API body ([#1060](https://github.com/opensearch-project/OpenSearch/pull/1060))
* Max scroll limit breach to throw a OpenSearchRejectedExecutionException ([#1054](https://github.com/opensearch-project/OpenSearch/pull/1054))
* Extract excludes into a file, fix the link checker by adding http://site.icu-project.org/. ([#1189](https://github.com/opensearch-project/OpenSearch/pull/1189))
* Prevent /_cat/master from getting tripped by the CB ([#1036](https://github.com/opensearch-project/OpenSearch/pull/1036))
* Excluding missed broken links from link checker ([#1010](https://github.com/opensearch-project/OpenSearch/pull/1010))
* Excluding links from link checker ([#995](https://github.com/opensearch-project/OpenSearch/pull/995))
* Version checks are incorrectly returning versions < 1.0.0. ([#797](https://github.com/opensearch-project/OpenSearch/pull/797))
* Make `:server:check` pass successfully ([#471](https://github.com/opensearch-project/OpenSearch/pull/471))
* Correct the regex pattern for class path in testDieWithDignity() ([#466](https://github.com/opensearch-project/OpenSearch/pull/466))
* Change ESLoggingHandler to OpenSearchLoggingHandler to pass failing test case org.opensearch.transport.netty4.OpenSearchLoggingHandlerIT.testLoggingHandler due to renaming ([#461](https://github.com/opensearch-project/OpenSearch/pull/461))
### Infrastructure
* Using Github App token to trigger CI for version increment PRs ([#2157](https://github.com/opensearch-project/OpenSearch/pull/2157))
* Using Github App to trigger CI for auto-backport ([#2071](https://github.com/opensearch-project/OpenSearch/pull/2071))
* Remove precommit and wrapper validation workflows for gradle as we migrate it to internal CI tools ([#452](https://github.com/opensearch-project/OpenSearch/pull/452))
* Updated the url for docker distribution ([#2325](https://github.com/opensearch-project/OpenSearch/pull/2325))
* Recommend Docker 3.6.0. ([#1427](https://github.com/opensearch-project/OpenSearch/pull/1427))
* docker build: use OSS `log4j2.properties` ([#878](https://github.com/opensearch-project/OpenSearch/pull/878))
* [DOCKER] add apt update to test fixture krb5kdc ([#565](https://github.com/opensearch-project/OpenSearch/pull/565))
* Cleanup `default` flavor stragglers from docker distributions. ([#481](https://github.com/opensearch-project/OpenSearch/pull/481))
* Replace blacklist in Gradle build environment configuration (#2752) ([#2781](https://github.com/opensearch-project/OpenSearch/pull/2781))
* Add 1.3.2 to main causing gradle check failures (#2679) ([#2684](https://github.com/opensearch-project/OpenSearch/pull/2684))
* Added jenkinsfile to run gradle check in OpenSearch (#2166) ([#2629](https://github.com/opensearch-project/OpenSearch/pull/2629))
* Gradle check retry (#2638) ([#2661](https://github.com/opensearch-project/OpenSearch/pull/2661))
* Move Gradle wrapper and precommit checks into OpenSearch repo. ([#1664](https://github.com/opensearch-project/OpenSearch/pull/1664))
* Enabling missingJavadoc validation in gradle check ([#721](https://github.com/opensearch-project/OpenSearch/pull/721))
* Removing Jenkinsfile (not used), replaced by opensearch-build/jenkins/opensearch/Jenkinsfile ([#1408](https://github.com/opensearch-project/OpenSearch/pull/1408))
* Changed JAVA_HOME to jdk-17 (#2656) ([#2671](https://github.com/opensearch-project/OpenSearch/pull/2671))
* Adding support for JDK17 and removing JDK8 ([#2025](https://github.com/opensearch-project/OpenSearch/pull/2025))
* Add darwin-arm64-tar and no-jdk-darwin-arm64-tar archive distributions. ([#1668](https://github.com/opensearch-project/OpenSearch/pull/1668))
* Better JDK-18 EA (and beyond) support of SecurityManager ([#1750](https://github.com/opensearch-project/OpenSearch/pull/1750))
* Support JDK 18 EA builds ([#1710](https://github.com/opensearch-project/OpenSearch/pull/1710))
* Adding 1.2.2 ([#1731](https://github.com/opensearch-project/OpenSearch/pull/1731))
* Add version 1.2.1. ([#1701](https://github.com/opensearch-project/OpenSearch/pull/1701))
* Add version 1.2.3. ([#1760](https://github.com/opensearch-project/OpenSearch/pull/1760))
* Modernize and consolidate JDKs usage across all stages of the build. Use JDK-17 as bundled JDK distribution to run tests ([#1358](https://github.com/opensearch-project/OpenSearch/pull/1358))
* Fix build-tools/reaper source/target compatibility to be JDK-11 (#2596) ([#2606](https://github.com/opensearch-project/OpenSearch/pull/2606))
* Add darwin-arm64-tar and no-jdk-darwin-arm64-tar archive distributions. ([#1668](https://github.com/opensearch-project/OpenSearch/pull/1668))
* Remove Github DCO action since DCO runs via Github App now ([#2317](https://github.com/opensearch-project/OpenSearch/pull/2317))
* Adding Github action for auto backport PR creation ([#1600](https://github.com/opensearch-project/OpenSearch/pull/1600))
* Add a whitesource unified agent file and update the config ([#1540](https://github.com/opensearch-project/OpenSearch/pull/1540))
* Run link checker GitHub action on schedule. ([#1221](https://github.com/opensearch-project/OpenSearch/pull/1221))
* Clarify opensearch.version to not include -SNAPSHOT. ([#1186](https://github.com/opensearch-project/OpenSearch/pull/1186))
* Move pr template to .github as default since folder design required manually added to url ([#458](https://github.com/opensearch-project/OpenSearch/pull/458))
* changed label from low hanging fruit to help wanted. added link to filter for that label. Added link to forum ([#435](https://github.com/opensearch-project/OpenSearch/pull/435))
* adding in untriaged label to features ([#1419](https://github.com/opensearch-project/OpenSearch/pull/1419))
* Run spotless and exclude checkstyle on plugins module ([#1417](https://github.com/opensearch-project/OpenSearch/pull/1417))
* Adding spotless support for subprojects under :test ([#1464](https://github.com/opensearch-project/OpenSearch/pull/1464))
* Run spotless and exclude checkstyle on rest-api-spec module ([#1462](https://github.com/opensearch-project/OpenSearch/pull/1462))
* Run spotless and exclude checkstyle on modules module ([#1442](https://github.com/opensearch-project/OpenSearch/pull/1442))
* Enabling spotless, disabling checkstyle check on plugins ([#1488](https://github.com/opensearch-project/OpenSearch/pull/1488))
* Cleanup for Checkstyle ([#1370](https://github.com/opensearch-project/OpenSearch/pull/1370))
* Run spotless and exclude checkstyle on libs module ([#1428](https://github.com/opensearch-project/OpenSearch/pull/1428))
* Run spotless and exclude checkstyle on client module ([#1392](https://github.com/opensearch-project/OpenSearch/pull/1392))
* Run spotless and exclude checkstyle on server module ([#1380](https://github.com/opensearch-project/OpenSearch/pull/1380))
* Change whitesource integration to scan on 1.x branch ([#1786](https://github.com/opensearch-project/OpenSearch/pull/1786))
* Add .whitesource configuration file ([#1525](https://github.com/opensearch-project/OpenSearch/pull/1525))
* add codeowners file ([#1530](https://github.com/opensearch-project/OpenSearch/pull/1530))
* Updated links for linkchecker ([#1539](https://github.com/opensearch-project/OpenSearch/pull/1539))
* Updating dependabot open pr limits ([#1875](https://github.com/opensearch-project/OpenSearch/pull/1875))
* Updating .gitattributes for additional file types ([#1727](https://github.com/opensearch-project/OpenSearch/pull/1727))
* Updating the Ivy repository to point to real url for Releases ([#602](https://github.com/opensearch-project/OpenSearch/pull/602))
* build: introduce support for reproducible builds ([#1995](https://github.com/opensearch-project/OpenSearch/pull/1995))
* Add support to generate code coverage report with JaCoCo ([#971](https://github.com/opensearch-project/OpenSearch/pull/971))
* Support running elasticsearch-oss distribution in test cluster for BWC ([#764](https://github.com/opensearch-project/OpenSearch/pull/764))
* FreeBSD Java support ([#1014](https://github.com/opensearch-project/OpenSearch/pull/1014))
* Override Default Distribution Download Url with Custom Distribution Url when it is passed from Plugin ([#2420](https://github.com/opensearch-project/OpenSearch/pull/2420))
* Restore Java 8 compatibility for build tools. (#2300) ([#2321](https://github.com/opensearch-project/OpenSearch/pull/2321))
* Revert "Override Default Distribution Download Url with Custom Distribution Url When User Passes a Url" ([#2256](https://github.com/opensearch-project/OpenSearch/pull/2256))
* Override Default Distribution Download Url with Custom Distribution Url When User Passes a Url ([#2086](https://github.com/opensearch-project/OpenSearch/pull/2086))
* added config file to git issue template directory to disable blank issue creation ([#2158](https://github.com/opensearch-project/OpenSearch/pull/2158))
* Add JetBrains Gateway setup details ([#1944](https://github.com/opensearch-project/OpenSearch/pull/1944))
* Adding workflow to auto delete backport merged branches from backport workflow ([#2050](https://github.com/opensearch-project/OpenSearch/pull/2050))
* Add IssueNavigationLink ([#1964](https://github.com/opensearch-project/OpenSearch/pull/1964))
* Using pull_request_target in place of pull_request ([#1952](https://github.com/opensearch-project/OpenSearch/pull/1952))
* Using custom branch name for auto backporting PRs ([#1862](https://github.com/opensearch-project/OpenSearch/pull/1862))
* Added help to build distributions in docs ([#1898](https://github.com/opensearch-project/OpenSearch/pull/1898))
* Auto-increment next development iteration. ([#1816](https://github.com/opensearch-project/OpenSearch/pull/1816))
* Catching Maintainers up for Q4 2021 new additions/removals ([#1841](https://github.com/opensearch-project/OpenSearch/pull/1841))
* Added .gitattributes to manage end-of-line checks for Windows/*nix systems ([#1638](https://github.com/opensearch-project/OpenSearch/pull/1638))
* Add staged version 1.1.1 ([#1506](https://github.com/opensearch-project/OpenSearch/pull/1506))
* [BWC] Diable BWC tests until branch versions are synced ([#1508](https://github.com/opensearch-project/OpenSearch/pull/1508))
* Moving DCO to workflows ([#1458](https://github.com/opensearch-project/OpenSearch/pull/1458))
* changed work-in-progress language ([#1275](https://github.com/opensearch-project/OpenSearch/pull/1275))
* Removed beta from new issues. ([#1071](https://github.com/opensearch-project/OpenSearch/pull/1071))
* Include sources and javadoc artifacts while publishing to a Maven repository ([#1049](https://github.com/opensearch-project/OpenSearch/pull/1049))
* Replaced custom built JNA by official JNA distribution. ([#1003](https://github.com/opensearch-project/OpenSearch/pull/1003))
* [Version] Don't spoof major for 3.0+ clusters (#2722) ([#2749](https://github.com/opensearch-project/OpenSearch/pull/2749))
* adds ToC ([#2546](https://github.com/opensearch-project/OpenSearch/pull/2546))
* Add Version.V_1_2_5 constant
* add 1.2.5 to bwcVersions
* [Deprecate] Setting explicit version on analysis component ([#1978](https://github.com/opensearch-project/OpenSearch/pull/1978))
* [Deprecate] index.merge.policy.max_merge_at_once_explicit ([#1981](https://github.com/opensearch-project/OpenSearch/pull/1981))
* [plugin] repository-azure: add configuration settings for connect/write/response/read timeouts ([#1789](https://github.com/opensearch-project/OpenSearch/pull/1789))
* [plugin] repository-azure is not working properly hangs on basic operations (#1740) ([#1749](https://github.com/opensearch-project/OpenSearch/pull/1749))
* [main] Add staged version 1.3.0 for bwc ([#1510](https://github.com/opensearch-project/OpenSearch/pull/1510))
* [repository-azure] plugin should use Azure Storage SDK v12 for Java ([#1302](https://github.com/opensearch-project/OpenSearch/pull/1302))
* Allow building on FreeBSD ([#1091](https://github.com/opensearch-project/OpenSearch/pull/1091))
* initial commit to add in a dependabot.yml file ([#1353](https://github.com/opensearch-project/OpenSearch/pull/1353))
* Rename artifact produced by the build to include -min ([#1251](https://github.com/opensearch-project/OpenSearch/pull/1251))
* [Version] Add 1.2 for BWC testing ([#1241](https://github.com/opensearch-project/OpenSearch/pull/1241))
* Exclude failing links from plugins/modules ([#1223](https://github.com/opensearch-project/OpenSearch/pull/1223))
* Kept the original constructor for PluginInfo to maintain bwc ([#1206](https://github.com/opensearch-project/OpenSearch/pull/1206))
* [Version] Increment main to 2.0 ([#1192](https://github.com/opensearch-project/OpenSearch/pull/1192))
* Added all icu-project.org websites to the link checker exclusions. ([#1201](https://github.com/opensearch-project/OpenSearch/pull/1201))
* Add 1.0.1 revision ([#1152](https://github.com/opensearch-project/OpenSearch/pull/1152))
* distribution/packages: Fix filename format for deb archives ([#621](https://github.com/opensearch-project/OpenSearch/pull/621))
* [Versioning] Fix Version.fromString logic for legacy version ([#604](https://github.com/opensearch-project/OpenSearch/pull/604))
* Rename the distribution used in test clusters. ([#603](https://github.com/opensearch-project/OpenSearch/pull/603))
* clean up rpm artifact naming ([#590](https://github.com/opensearch-project/OpenSearch/pull/590))
* changed to point to open issues rather than the project board
* Update Plugin Signing Key ([#512](https://github.com/opensearch-project/OpenSearch/pull/512))
* Use OpenSearch artifacts URL for official plugin installation. ([#490](https://github.com/opensearch-project/OpenSearch/pull/490))
* Perform more renaming to OpenSearch. ([#470](https://github.com/opensearch-project/OpenSearch/pull/470))
* Adding instructions on License and DCO practices to PR template ([#462](https://github.com/opensearch-project/OpenSearch/pull/462))
* Remove lingering instances of Default distribution in favour of Oss ([#440](https://github.com/opensearch-project/OpenSearch/pull/440))
* Validation for official plugins for upgrade tool ([#973](https://github.com/opensearch-project/OpenSearch/pull/973))
* Lower build requirement from Java 14+ to Java 11+ ([#940](https://github.com/opensearch-project/OpenSearch/pull/940))
* Add Snapshot maven repository ([#829](https://github.com/opensearch-project/OpenSearch/pull/829))
* distribution/packages: Fix RPM architecture name for 64-bit x86 ([#620](https://github.com/opensearch-project/OpenSearch/pull/620))
* Update issue template with multiple labels ([#668](https://github.com/opensearch-project/OpenSearch/pull/668))
* Renaming CPU architecture to have consistent naming ([#612](https://github.com/opensearch-project/OpenSearch/pull/612))
### Documentation
* Adding workflow to create documentation related issues in documentation-website repo (#2929) ([#2976](https://github.com/opensearch-project/OpenSearch/pull/2976))
* Updating auto backport documentation ([#1620](https://github.com/opensearch-project/OpenSearch/pull/1620))
* Updating README and CONTRIBUTING guide to get ready for beta1 release. ([#672](https://github.com/opensearch-project/OpenSearch/pull/672))
* Update instructions on debugging OpenSearch. ([#689](https://github.com/opensearch-project/OpenSearch/pull/689))
* Fixing typo in TESTING.md ([#1849](https://github.com/opensearch-project/OpenSearch/pull/1849))
* Fix JavaDoc typo in XContentBuilder ([#1739](https://github.com/opensearch-project/OpenSearch/pull/1739))
* Update Readme ([#433](https://github.com/opensearch-project/OpenSearch/pull/433))
* Fix DCO CLI example in CONTRIBUTING.md ([#576](https://github.com/opensearch-project/OpenSearch/pull/576))
* Change comment to point to DEVELOPER_GUIDE.md ([#1415](https://github.com/opensearch-project/OpenSearch/pull/1415))
* [typos] typos in DEVELOPER_GUIDE.md ([#1381](https://github.com/opensearch-project/OpenSearch/pull/1381))
* Adding Security Reporting Instructions in README.md file Signed-off-by: Rishikesh Reddy Pasham rishireddy1159@gmail.com ([#1326](https://github.com/opensearch-project/OpenSearch/pull/1326))
* Add guide for generating code coverage report in TESTING.md ([#1264](https://github.com/opensearch-project/OpenSearch/pull/1264))
* Added Eclipse import instructions to DEVELOPER_GUIDE.md ([#1215](https://github.com/opensearch-project/OpenSearch/pull/1215))
* Update/maintainers.md ([#723](https://github.com/opensearch-project/OpenSearch/pull/723))
* Added a link to the maintainer file in contribution guides ([#589](https://github.com/opensearch-project/OpenSearch/pull/589))
* Updated READMEs on releasing, maintaining, admins and security. ([#853](https://github.com/opensearch-project/OpenSearch/pull/853))
* adding components to DEVELOPER_GUIDE ([#1200](https://github.com/opensearch-project/OpenSearch/pull/1200))
* Update developer guide reference to download JDK 14 ([#1452](https://github.com/opensearch-project/OpenSearch/pull/1452))
* [WIP] Developer guide updates ([#595](https://github.com/opensearch-project/OpenSearch/pull/595))
* Update README with getting started ([#549](https://github.com/opensearch-project/OpenSearch/pull/549))
* Update Developers Guide. ([#522](https://github.com/opensearch-project/OpenSearch/pull/522))
* Update LICENSE.txt
* [License] Add SPDX and OpenSearch Modification license header ([#509](https://github.com/opensearch-project/OpenSearch/pull/509))
* [License] Update SPDX License Header ([#510](https://github.com/opensearch-project/OpenSearch/pull/510))
* Cleanup TESTING and DEVELOPER_GUIDE markdowns ([#946](https://github.com/opensearch-project/OpenSearch/pull/946))
* Add 1.3.0 release notes in main ([#2489](https://github.com/opensearch-project/OpenSearch/pull/2489))
* Add release notes for 1.2.4 ([#1934](https://github.com/opensearch-project/OpenSearch/pull/1934))
* Added release notes for 1.2.3. ([#1791](https://github.com/opensearch-project/OpenSearch/pull/1791))
* Adding release notes for 1.2.2 ([#1730](https://github.com/opensearch-project/OpenSearch/pull/1730))
* Adding release notes for 1.2.1 ([#1725](https://github.com/opensearch-project/OpenSearch/pull/1725))
* Add 1.2 release notes and correct 1.1 release notes. ([#1581](https://github.com/opensearch-project/OpenSearch/pull/1581))
* Generate release notes for 1.1 ([#1230](https://github.com/opensearch-project/OpenSearch/pull/1230))
* Update release note for GA 1.0 with new commits and removes #547 ([#953](https://github.com/opensearch-project/OpenSearch/pull/953))
* Adding release notes for 1.0.0 ([#885](https://github.com/opensearch-project/OpenSearch/pull/885))
* Adding release notes for 1.0.0-rc1 ([#794](https://github.com/opensearch-project/OpenSearch/pull/794))
* Modified TESTING instructions to clarify use of testing classes ([#1930](https://github.com/opensearch-project/OpenSearch/pull/1930))
* Clarify JDK requirement in the developer guide ([#1153](https://github.com/opensearch-project/OpenSearch/pull/1153))
* Add trademark notice ([#2473](https://github.com/opensearch-project/OpenSearch/pull/2473))
* Expand SearchPlugin javadocs. ([#1909](https://github.com/opensearch-project/OpenSearch/pull/1909))
* Linked the formatting setting file ([#1860](https://github.com/opensearch-project/OpenSearch/pull/1860))
* Add more instructions how to install/configure git secrets ([#1202](https://github.com/opensearch-project/OpenSearch/pull/1202))
* Add themed logo to README ([#988](https://github.com/opensearch-project/OpenSearch/pull/988))
* Replace Elasticsearch docs links in scripts ([#994](https://github.com/opensearch-project/OpenSearch/pull/994))
* Cleaned up developer guide, added TOC. ([#572](https://github.com/opensearch-project/OpenSearch/pull/572))
* Document running individual tests. ([#741](https://github.com/opensearch-project/OpenSearch/pull/741))
* [License] Add SPDX License Header to security policies ([#531](https://github.com/opensearch-project/OpenSearch/pull/531))
* Added a maintainers file ([#523](https://github.com/opensearch-project/OpenSearch/pull/523))
* Remove extra greater-thans from README ([#527](https://github.com/opensearch-project/OpenSearch/pull/527))
* [Rename] Update Vagrantfile ([#515](https://github.com/opensearch-project/OpenSearch/pull/515))
* [README] Remove stale information ([#513](https://github.com/opensearch-project/OpenSearch/pull/513))
* [Rename] Change license header and copyright notice to SPDX ([#437](https://github.com/opensearch-project/OpenSearch/pull/437))
### Maintenance
* Make discovered_master field optional on the client to support compatibility for opensearch client with odfe (#2641) ([#2653](https://github.com/opensearch-project/OpenSearch/pull/2653))
* Update azure-storage-blob to 12.15.0: fix test flakiness (#2795) ([#2799](https://github.com/opensearch-project/OpenSearch/pull/2799))
* Update azure-storage-blob to 12.15.0 (#2774) ([#2778](https://github.com/opensearch-project/OpenSearch/pull/2778))
* Update the BWC versions (post 1.x backport) ([#2390](https://github.com/opensearch-project/OpenSearch/pull/2390))
* Update bwc verions for (#2237) ([#2248](https://github.com/opensearch-project/OpenSearch/pull/2248))
* Update #2103 BWC Versions ([#2173](https://github.com/opensearch-project/OpenSearch/pull/2173))
* Update bundled JDK distribution to 17.0.2+8 ([#2007](https://github.com/opensearch-project/OpenSearch/pull/2007))
* Update Mockito to 4.3.1 ([#1973](https://github.com/opensearch-project/OpenSearch/pull/1973))
* Update protobuf-java to 3.19.3 ([#1945](https://github.com/opensearch-project/OpenSearch/pull/1945))
* Update Netty to 4.1.73.Final ([#1936](https://github.com/opensearch-project/OpenSearch/pull/1936))
* Update FIPS API libraries of Bouncy Castle ([#1853](https://github.com/opensearch-project/OpenSearch/pull/1853))
* Update junit to 4.13.1 ([#1837](https://github.com/opensearch-project/OpenSearch/pull/1837))
* Update Mockito to 4.2.x ([#1830](https://github.com/opensearch-project/OpenSearch/pull/1830))
* Upgrading bouncycastle to 1.70 ([#1832](https://github.com/opensearch-project/OpenSearch/pull/1832))
* Updating Netty to 4.1.72.Final ([#1831](https://github.com/opensearch-project/OpenSearch/pull/1831))
* Update to log4j 2.17.1 ([#1820](https://github.com/opensearch-project/OpenSearch/pull/1820))
* Update to log4j 2.17.0 ([#1771](https://github.com/opensearch-project/OpenSearch/pull/1771))
* [repository-azure] Update to the latest Azure Storage SDK v12, remove privileged runnable wrapper in favor of access helper ([#1521](https://github.com/opensearch-project/OpenSearch/pull/1521))
* Update bundled JDK distribution to 17.0.1+12 ([#1476](https://github.com/opensearch-project/OpenSearch/pull/1476))
* Upgrading netty version to 4.1.69.Final ([#1363](https://github.com/opensearch-project/OpenSearch/pull/1363))
* Modernize and consolidate JDKs usage across all stages of the build. Update JDK-14 requirement, switch to JDK-17 instead ([#1368](https://github.com/opensearch-project/OpenSearch/pull/1368))
* Upgrade hadoop dependencies for hdfs plugin ([#1335](https://github.com/opensearch-project/OpenSearch/pull/1335))
* Replace securemock with mock-maker (test support), update Mockito to 3.12.4 ([#1332](https://github.com/opensearch-project/OpenSearch/pull/1332))
* Update Jackson to 2.12.5 ([#1247](https://github.com/opensearch-project/OpenSearch/pull/1247))
* Update DistributionDownloader to support fetching arm64 bundles. ([#929](https://github.com/opensearch-project/OpenSearch/pull/929))
* Update favicon for OpenSearch ([#932](https://github.com/opensearch-project/OpenSearch/pull/932))
* Update DistributionDownloader to fetch snapshots and staging bundles. ([#904](https://github.com/opensearch-project/OpenSearch/pull/904))
* Version bump for 1.1 release ([#772](https://github.com/opensearch-project/OpenSearch/pull/772))
* update external library 'pdfbox' version to 2.0.24 to reduce vulnerability ([#883](https://github.com/opensearch-project/OpenSearch/pull/883))
* Update dependencies for ingest-attachment plugin. ([#666](https://github.com/opensearch-project/OpenSearch/pull/666))
* Update hadoop-minicluster version for test fixture. ([#645](https://github.com/opensearch-project/OpenSearch/pull/645))
* Update remote repo for BWC checks. ([#482](https://github.com/opensearch-project/OpenSearch/pull/482))
* Update year and developer info in generated POMs. ([#444](https://github.com/opensearch-project/OpenSearch/pull/444))
* Refresh OpenSearch nodes version in cluster state after upgrade ([#865](https://github.com/opensearch-project/OpenSearch/pull/865))
* [Upgrade] ICU4j from 68.2 to 70.1 ([#2504](https://github.com/opensearch-project/OpenSearch/pull/2504))
* Upgrade to log4j 2.16.0 ([#1721](https://github.com/opensearch-project/OpenSearch/pull/1721))
* Upgrade to logj4 2.15.0 ([#1698](https://github.com/opensearch-project/OpenSearch/pull/1698))
* Updating Log4j to 2.11.2 ([#1696](https://github.com/opensearch-project/OpenSearch/pull/1696))
* Upgrade dependency ([#1571](https://github.com/opensearch-project/OpenSearch/pull/1571))
* Upgrade apache commons-compress to 1.21 ([#1197](https://github.com/opensearch-project/OpenSearch/pull/1197))
* Removed java11 source folders since JDK-11 is the baseline now (#2898) ([#2953](https://github.com/opensearch-project/OpenSearch/pull/2953))
* [Remove] MainResponse version override cluster setting (#3031) ([#3033](https://github.com/opensearch-project/OpenSearch/pull/3033))
* [Remove] remaining AllFieldMapper references (#3007) ([#3010](https://github.com/opensearch-project/OpenSearch/pull/3010))
* [2.x] Remove deprecation warning of using REST API request parameter 'master_timeout' (#2920) ([#2931](https://github.com/opensearch-project/OpenSearch/pull/2931))
* [Rename] ESTestCase stragglers to OpenSearchTestCase (#3053) ([#3064](https://github.com/opensearch-project/OpenSearch/pull/3064))
* Use G1GC on JDK11+ (#2964) ([#2970](https://github.com/opensearch-project/OpenSearch/pull/2970))
* Remove endpoint_suffix dependency on account key (#2485) ([#2808](https://github.com/opensearch-project/OpenSearch/pull/2808))
* Updating repository commons logging version ([#2541](https://github.com/opensearch-project/OpenSearch/pull/2541))
* Upgrading Shadow plugin to 7.1.2 ([#2033](https://github.com/opensearch-project/OpenSearch/pull/2033))
* Upgrading Jackson-Databind version ([#1982](https://github.com/opensearch-project/OpenSearch/pull/1982))
* Upgrading commons-codec in hdfs-fixture and cleaning up dependencies in repository-hdfs ([#1603](https://github.com/opensearch-project/OpenSearch/pull/1603))
* Upgrading gson to 2.8.9 ([#1541](https://github.com/opensearch-project/OpenSearch/pull/1541))
* Upgrading dependencies ([#1491](https://github.com/opensearch-project/OpenSearch/pull/1491))
* Upgrading dependencies in hdfs plugin ([#1466](https://github.com/opensearch-project/OpenSearch/pull/1466))
* Upgrading mockito version to make it consistent across the repo ([#1410](https://github.com/opensearch-project/OpenSearch/pull/1410))
* Change deprecation message for REST API parameter 'master_timeout' to specify the version of removal (#2863) ([#2865](https://github.com/opensearch-project/OpenSearch/pull/2865))
* Update ThirdPartyAuditTask to check for and list pointless exclusions. (#2760) ([#2765](https://github.com/opensearch-project/OpenSearch/pull/2765))
* Add Shadow jar publication to lang-painless module. (#2681) ([#2712](https://github.com/opensearch-project/OpenSearch/pull/2712))
* Add mapping method back referenced in other repos (#2636) ([#2649](https://github.com/opensearch-project/OpenSearch/pull/2649))
* Move Jackson-databind to 2.13.2 ([#2548](https://github.com/opensearch-project/OpenSearch/pull/2548))
* [Unmute] NumberFieldTypeTests ([#2531](https://github.com/opensearch-project/OpenSearch/pull/2531))
* [Unmute] IndexPrimaryRelocationIT ([#2488](https://github.com/opensearch-project/OpenSearch/pull/2488))
* [Remove] TrimUnsafeCommit logic for legacy 6.x indexes ([#2225](https://github.com/opensearch-project/OpenSearch/pull/2225))
* Adjust main version after backport to 1.x ([#2147](https://github.com/opensearch-project/OpenSearch/pull/2147))
* [Remove] CircuitBreaker Accounting ([#2056](https://github.com/opensearch-project/OpenSearch/pull/2056))
* [Remove] Segment memory estimation and tracking ([#2029](https://github.com/opensearch-project/OpenSearch/pull/2029))
* [Remove] index.merge.policy.max_merge_at_once_explicit ([#1988](https://github.com/opensearch-project/OpenSearch/pull/1988))
* [Remove] Setting explicit version on analysis component ([#1986](https://github.com/opensearch-project/OpenSearch/pull/1986))
* Wildcard max_expansion version check update ([#1980](https://github.com/opensearch-project/OpenSearch/pull/1980))
* Removing lingering transportclient ([#1955](https://github.com/opensearch-project/OpenSearch/pull/1955))
* [BWC] Ensure 2.x compatibility with Legacy 7.10.x ([#1902](https://github.com/opensearch-project/OpenSearch/pull/1902))
* File name correction to follow existing convention ([#1874](https://github.com/opensearch-project/OpenSearch/pull/1874))
* [Remove] Old Translog Checkpoint Format ([#1884](https://github.com/opensearch-project/OpenSearch/pull/1884))
* Remove unwanted unreleased versions ([#1877](https://github.com/opensearch-project/OpenSearch/pull/1877))
* replace with opensearch-http-channel and opensearch-http-server-channel ([#1799](https://github.com/opensearch-project/OpenSearch/pull/1799))
* Add bwc version 1.2.4 ([#1796](https://github.com/opensearch-project/OpenSearch/pull/1796))
* [Remove] various builder and mapping deprecations ([#1752](https://github.com/opensearch-project/OpenSearch/pull/1752))
* [Remove] Remaining Flavor Serialization ([#1751](https://github.com/opensearch-project/OpenSearch/pull/1751))
* [Remove] DynamicTemplate deprecations ([#1742](https://github.com/opensearch-project/OpenSearch/pull/1742))
* [Remove] Analyzer Deprecations ([#1741](https://github.com/opensearch-project/OpenSearch/pull/1741))
* Drop mocksocket & securemock dependencies from sniffer and rest client (no needed) ([#1174](https://github.com/opensearch-project/OpenSearch/pull/1174))
* [BWC] Temporarily disable bwc testing while bumping 1.0.1
* [DEPRECATE] SimpleFS in favor of NIOFS ([#1073](https://github.com/opensearch-project/OpenSearch/pull/1073))
* Replace JCenter with Maven Central. ([#1057](https://github.com/opensearch-project/OpenSearch/pull/1057))
* Restoring alpha/beta/rc version semantics ([#1112](https://github.com/opensearch-project/OpenSearch/pull/1112))
* Remove `client/sniffer` from Javadoc exemption list ([#818](https://github.com/opensearch-project/OpenSearch/pull/818))
* Removed pre-alpha notes. ([#815](https://github.com/opensearch-project/OpenSearch/pull/815))
* Remove checks for legacy .yaml and .json config files. ([#792](https://github.com/opensearch-project/OpenSearch/pull/792))
* Remove reference to an EC2 instance type. ([#812](https://github.com/opensearch-project/OpenSearch/pull/812))
* Remove all elastic.co references from javadocs ([#586](https://github.com/opensearch-project/OpenSearch/pull/586))
* Remove the oss string from OpenSearch distributions ([#575](https://github.com/opensearch-project/OpenSearch/pull/575))
* [Rename] Remove final references to legacy keystore ([#514](https://github.com/opensearch-project/OpenSearch/pull/514))
* changed Apache to Apache 2.0. Numbered principles
* fixed apache to apache 2.0
* Replace nio and nitty test endpoint ([#475](https://github.com/opensearch-project/OpenSearch/pull/475))
* [Rename] org.elasticsearch.client.documentation.SearchDocumentationIT.testSearchRequestSuggestions ([#467](https://github.com/opensearch-project/OpenSearch/pull/467))
### Refactoring
* [Rename] Refactoring Elastic references in docker and kerberos builds (#428) ([#438](https://github.com/opensearch-project/OpenSearch/pull/438))
* [Refactor] LuceneChangesSnapshot to use accurate ops history ([#2452](https://github.com/opensearch-project/OpenSearch/pull/2452))
* Refactoring gated and ref-counted interfaces and their implementations ([#2396](https://github.com/opensearch-project/OpenSearch/pull/2396))
* [Refactor] MapperService to QueryShardContext in valueFetcher ([#2027](https://github.com/opensearch-project/OpenSearch/pull/2027))
* [Refactor] Lucene DataInput and DataOutput to StreamInput and StreamOutput ([#2035](https://github.com/opensearch-project/OpenSearch/pull/2035))
* [Refactor] InternalEngine to always use soft deletes ([#1933](https://github.com/opensearch-project/OpenSearch/pull/1933))
* Refactor LegacyESVersion tests from Version tests ([#1662](https://github.com/opensearch-project/OpenSearch/pull/1662))
* Remove the IndexCommitRef class ([#2421](https://github.com/opensearch-project/OpenSearch/pull/2421))
* Decouple IndexSettings from IncludeExclude ([#2860](https://github.com/opensearch-project/OpenSearch/pull/2860))
* Clear up some confusing code in IndexShardHotSpotTests ([#1534](https://github.com/opensearch-project/OpenSearch/pull/1534))
* Rename reference to project OpenSearch was forked from ([#2483](https://github.com/opensearch-project/OpenSearch/pull/2483))
* Introduce RestHandler.Wrapper to help with delegate implementations ([#1004](https://github.com/opensearch-project/OpenSearch/pull/1004))
### Tests
* Add type mapping removal bwc tests for indexing, searching, snapshots ([#2901](https://github.com/opensearch-project/OpenSearch/pull/2901))
* Removing SLM check in tests for OpenSearch versions (#2604) ([#2620](https://github.com/opensearch-project/OpenSearch/pull/2620))
* Use Hamcrest matchers and assertThat() in ReindexRenamedSettingTests ([#2503](https://github.com/opensearch-project/OpenSearch/pull/2503))
* [Test-Failure] Mute TranslogPolicyIT ([#2342](https://github.com/opensearch-project/OpenSearch/pull/2342))
* Added timeout to ensureGreen() for testClusterGreenAfterPartialRelocation ([#2074](https://github.com/opensearch-project/OpenSearch/pull/2074))
* Stabilizing org.opensearch.cluster.routing.MovePrimaryFirstTests.test… ([#2048](https://github.com/opensearch-project/OpenSearch/pull/2048))
* Added timeout to ensureGreen() for testClusterGreenAfterPartialRelocation ([#1983](https://github.com/opensearch-project/OpenSearch/pull/1983))
* Add hook to execute logic before Integ test task starts ([#1969](https://github.com/opensearch-project/OpenSearch/pull/1969))
* Remove transport client from tests. ([#1809](https://github.com/opensearch-project/OpenSearch/pull/1809))
* [Tests] ClusterHealthIT:testHealthOnMasterFailover - Increase master node timeout ([#1812](https://github.com/opensearch-project/OpenSearch/pull/1812))
* Ignore file order in test assertion ([#1755](https://github.com/opensearch-project/OpenSearch/pull/1755))
* Integration test that checks for settings upgrade ([#1482](https://github.com/opensearch-project/OpenSearch/pull/1482))
* [bwc] reenable bwc testing after syncing staged branches ([#1511](https://github.com/opensearch-project/OpenSearch/pull/1511))
* [Tests] Translog Pruning tests to MetadataCreateIndexServiceTests ([#1295](https://github.com/opensearch-project/OpenSearch/pull/1295))
* Reduce iterations to improve test run time ([#1168](https://github.com/opensearch-project/OpenSearch/pull/1168))
* Tune datanode count and shards count to improve test run time ([#1170](https://github.com/opensearch-project/OpenSearch/pull/1170))
* [BWC] Re-enable bwc testing after 1.0.1 version bump
* Add unit test for RestActionListener. Validate that onFailure() sends response even when BytesRestResponse can not be constructed using passed exception. Follow up on #923. ([#1024](https://github.com/opensearch-project/OpenSearch/pull/1024))
* [TEST] Fix failing distro tests for linux packages ([#569](https://github.com/opensearch-project/OpenSearch/pull/569))
* [TEST] Fix failing packaging tests for OpenSearch distributions. ([#541](https://github.com/opensearch-project/OpenSearch/pull/541))
* Remove the references to xpack and elastic in tests. ([#516](https://github.com/opensearch-project/OpenSearch/pull/516))
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