3.6.0

Version 3.6.0 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 3.6.0

Features

• Add bitmap64 query support (#20606)
• Add warmup phase for pull-based ingestion to prevent serving stale data before catching up with the streaming source (#20526)
• Implement field_mapping ingestion message mapper for pull-based ingestion (#20729)
• Add mapper_settings support and field_mapping mapper type for pull-based ingestion (#20722)
• Remove experimental tag for pull-based ingestion, marking it as public API (#20704)

Enhancements

• Add index warmer support for replica shards using segment replication (#20650)
• Add indices to search request slow log for easier request identification (#20588)
• Add node-level JVM and CPU runtime metrics following OpenTelemetry semantic conventions (#20844)
• Add new Sensitive setting property for tiering dynamic settings authorization (#20901)
• Add adaptive shard selection for bulk writes on append-only indices (#20065)
• Add support for expected remote cluster name validation in CCS sniff mode (#20532)
• Add search_settings support to WLM workload groups with initial timeout setting (#20536)
• Add scroll API support for workload management rule-based autotagging (#20151)
• Add stream request flag to SearchRequestContext for plugin consumption (#20530)
• Support Docker distribution builds for ppc64le, arm64, and s390x architectures (#20678)
• Fallback to Netty HTTP client when AWS CRT client is unavailable on the target platform (#20698)
• Add intra-segment support for single-value metric aggregations (sum, min, max, avg, stats, cardinality, value_count) (#20503)
• Expose wrapped scorer in ProfileScorer for plugin access to custom scorer methods (#20549)
• Fix ProfileScorer.getChildren() to expose wrapped scorer in the scorer tree hierarchy (#20607)
• Remove X-Request-Id format restrictions and make maximum length configurable (#21048)
• Make telemetry Tags immutable with allocation-efficient factories and content-based equality (#20788)
• Add ref_path support for package-based Hunspell dictionary loading with multi-tenant isolation (#20840)
• Prevent criteria field updates for context-aware indices to simplify version management (#20250)
• Add indexer interface to decouple IndexShard from Engine for pluggable engine architectures (#20675)
• Use ReadAdviseByContext for MMapDirectory instead of Lucene default read advise (#21062)

Bug Fixes

• Fix copy_to functionality for geo_point fields with object and array values (#20542)
• Fix field_caps returning empty results for disable_objects mappings and field name corruption (#20814)
• Fix terms lookup subquery to use cluster max_clause_count setting instead of hardcoded fallback (#20823)
• Fix terms aggregation performance regression on high-cardinality fields by adding a max cardinality setting (#20623)
• Fix terms aggregation performance regression using segment-to-global ordinals mapping (#20683)
• Fix array_index_out_of_bounds_exception with wildcard and aggregations under concurrent access (#20842)
• Add range validations in query builder and field mapper (#20518)
• Fix synonym_graph filter failure with word_delimiter_graph by handling analyzer dependency ordering (#19248)
• Fix index template pattern collision false positives for multi-wildcard patterns (#20702)
• Fix SecurityException when using opensearch.cgroups.hierarchy.override setting (#20565)
• Fix SLF4J component error caused by slf4j-api version mismatch with log4j binding (#20587)
• Fix JSON escaping in task details log metadata (#20802)
• Fix listBlobsByPrefixInSortedOrder in EncryptedBlobContainer to respect limit and prevent JVM exhaustion (#20514)
• Fix batched deletion of stale cluster metadata manifests to prevent remote storage pile-up (#20566)
• Fix segment replication infinite retry caused by stale metadata checkpoint (#20551)
• Fix ExitableTerms to delegate getMin/getMax methods avoiding slow path in field sort (#20775)
• Lazily initialize stored field reader in SourceLookup to avoid unnecessary madvise calls (#20827)
• Fix CriteriaBasedCodec to work with delegate codec (#20442)
• Show heap percent threshold instead of moving average in search cancellation messages (#20779)
• Relax updatedAt validation for WLM workload group creation to handle minor clock skew (#20486)
• Improve exception messaging when encountering legacy Elasticsearch version IDs during upgrade (#20512)
• Fix Windows service startup with OpenJDK by updating procrun to 1.5.1 (#20615)
• Expose STRICT_EXPAND_OPEN_HIDDEN_FORBID_CLOSED index option via static method (#20980)
• Fix stale segments cleanup to also trigger based on segments map size threshold (#20976)
• Move Randomness from server to lib/common to reduce FIPS demo installer size (#20570)
• Add accessUnixDomainSocket permission for transport-grpc on Windows (#20649)
• Harden HTTP/3 support detection by checking Quic native library availability for the target platform (#20680)
• Use OPENSEARCH_FIPS_MODE environment variable to enable FIPS enforced mode instead of checking for bcFIPS jars (#20625)
• Fix Arrow Flight transport TLS certificate hot-reload (#20700)
• Fix stream transport TLS certificate hot-reload by using live SSLContext from SecureTransportSettingsProvider (#20734)
• Ensure transient ThreadContext headers with propagators survive context restore (#20854)

Maintenance

• Bump Apache Lucene from 10.3.2 to 10.4.0 (#20735)
• Update Netty to 4.2.12.Final (#20586), (#20997), (#20998)
• Update Jackson to 2.21.2 (#20989)
• Bump OpenTelemetry to 1.60.1 and OpenTelemetry Semconv to 1.40.0 (#20737), (#20797)
• Bump Project Reactor to 3.8.4 and Reactor Netty to 1.3.4 (#20589), (#20834)
• Bump ch.qos.logback:logback-classic to 1.5.32 and logback-core to 1.5.27 ([#20525](#2052...

3.5.0

Version 3.5.0 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 3.5.0

Added

• Add support for fields containing dots in their name as literals (#19958)
• Add support for forward translog reading (#20163)
• Added public getter method in SourceFieldMapper to return excluded field (#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).
• Relax jar hell check when extended plugins share transitive dependencies (#20103)
• Added public getter method in SourceFieldMapper to return included field (#20290)
• Support for HTTP/3 (server side) (#20017)
• Add circuit breaker support for gRPC transport to prevent out-of-memory errors (#20203)
• Add index-level-encryption support for snapshots and remote-store (#20095)
• Adding BackWardCompatibility test for remote publication enabled cluster (#20221)
• Support for hll field mapper to support cardinality rollups (#20129)
• Add tracing support for StreamingRestChannel (#20361)
• Introduce new libs/netty4 module to share common implementation between netty-based plugins and modules (transport-netty4, transport-reactor-netty4) (#20447)
• Add validation to make crypto store settings immutable (#20123)
• Introduce concurrent translog recovery to accelerate segment replication primary promotion (#20251)
• Update to almalinux:10 (#20482)
• Add X-Request-Id to uniquely identify a search request (#19798)
• Added TopN selection logic for streaming terms aggregations (#20481)
• Added support for Intra Segment Search (#19704)
• Introduce AdditionalCodecs and EnginePlugin::getAdditionalCodecs hook to allow additional Codec registration (#20411)

Changed

• Handle custom metadata files in subdirectory-store (#20157)
• Add support for missing proto fields in GRPC FunctionScore and Highlight (#20169)
• Ensure all modules are included in INTEG_TEST testcluster distribution (#20241)
• Cleanup HttpServerTransport.Dispatcher in Netty tests (#20160)
• Use compact object headers with JDK25+ (#20392)
• Add cluster.initial_cluster_manager_nodes to testClusters OVERRIDABLE_SETTINGS (#20348)
• Add BigInteger support for unsigned_long fields in gRPC transport (#20346)
• Install demo security information when running ./gradlew run -PinstalledPlugins="['opensearch-security']" (#20372)
• Add Alt-Svc header support to advertise HTTP/3 availability (#20434)
• Refactor streaming agg query phase planning (#20471)

Fixed

• Fix Snapshot rename replacement unbounded length rename (#20464)
• Fix segment replication failure during rolling restart (#19234)
• Fix bug of warm index: FullFileCachedIndexInput was closed error (#20055)
• Fix flaky test ClusterMaxMergesAtOnceIT.testClusterLevelDefaultUpdatesMergePolicy (#18056)
• Fix bug in Assertion framework(Yaml Rest test): numeric comparison fails when comparing Integer vs Long (or Float vs Double) (#19376)
• Fix Netty deprecation warnings in transport-netty4 module (#20233)
• Fix snapshot restore when an index sort is present (#20284)
• Fix SearchPhaseExecutionException to properly initCause (#20320)
• [repository-s3] remove endpointOverride and let AWS SDK V2 S3 determine the s3 url based on bucket name or arn provided (#20345)
• Fix cluster.remote.<cluster_alias>.server_name setting no populating SNI (#20321)
• Fix X-Opaque-Id header propagation (along with other response headers) for streaming Reactor Netty 4 transport (#20371)
• Allow removing plugin that's optionally extended (#20417)
• Fix indexing regression and bug fixes for grouping criteria. (20145)
• LeafReader should not remove SubReaderWrappers incase IndexWriter encounters a non aborting Exception (#20193)
• Fix Netty deprecation warnings in transport-reactor-netty4 module (20429)
• Fix stats aggregation returning zero results with size:0. (20427)
• Fix the node local term and version being truncated in logs when host providers return very long IP or host strings (20432)
• Remove child level directory on refresh for CompositeIndexWriter (#20326)
• Fixes and refactoring in stream transport to make it more robust (#20359)

Dependencies

• Bump com.google.auth:google-auth-library-oauth2-http from 1.38.0 to 1.41.0 (#20183)
• Bump actions/checkout from 5 to 6 (#20186)
• Bump org.apache.commons:commons-configuration2 from 2.12.0 to 2.13.0 (#20185, #20184)
• Bump Project Reactor to 3.8.1 and Reactor Netty to 1.3.1 (#20217)
• Bump OpenTelemetry to 1.57.0 and OpenTelemetry Semconv to 1.37.0 (#20231)
• Bump peter-evans/create-pull-request from 7 to 8 (#20236)
• Bump org.apache.kerby:kerb-admin from 2.1.0 to 2.1.1 (#20235)
• Bump org.checkerframework:checker-qual from 3.49.0 to 3.52.1 (#20234)
• Bump netty to 4.2.9.Final (#20230)
• Bump log4j from 2.21.0 to 2.25.3 (#20308)
• Bump org.apache.logging.log4j:log4j-core from 2.25.2 to 2.25.3 (#20300)
• Bump ch.qos.logback:logback-core from 1.5.20 to 1.5.23 (#20303)
• Bump com.google.api.grpc:proto-google-iam-v1 from 1.57.0 to 1.58.2 (#20302)
• Bump actions/setup-java from 4 to 5 (#20304)
• Bump com.squareup.okhttp3:okhttp from 5.3.0 to 5.3.2 (#20331)
• Bump asm from 9.7 to 9.9.1 (#20330)
• Bump actions/upload-artifact from 5 to 6 (#20333)
• Bump com.google.http-client:google-http-client-appengine from 2.0.2 to 2.0.3 (#20332)
• Bump jackson from 2.18.1 to 2.20.1 (#20343)
• Bump opensearch-protobufs from 0.24.0 to 1.0.0 and update transport-grpc module compatibility ([#20335](https://github.com/opensearch-project/OpenSear...

3.4.0

Version 3.4.0 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 3.4.0

Added

• Allow setting index.creation_date on index creation and restore for plugin compatibility and migrations (#19931)
• Add support for a ForkJoinPool type (#19008)
• Add seperate shard limit validation for local and remote indices (#19532)
• Use Lucene pack method for half_float and unsigned_long when using ApproximatePointRangeQuery (#19553)
• New cluster setting search.query.max_query_string_length_monitor_only (#19539)
• Add a mapper for context aware segments grouping criteria (#19233)
• Return full error for GRPC error response (#19568)
• Add support for repository with Server side encryption enabled and client side encryption as well based on a flag (#19630)
• Add pluggable gRPC interceptors with explicit ordering(#19005)
• Add BindableServices extension point to transport-grpc-spi (#19304)
• Add metrics for the merged segment warmer feature (#18929)
• Handle deleted documents for filter rewrite sub-aggregation optimization (#19643)
• Add bulk collect API for filter rewrite sub-aggregation optimization (#19933)
• Allow collectors take advantage of preaggregated data using collectRange API (#20009)
• Bulk collection logic for metrics and cardinality aggregations (#20067)
• Add pointer based lag metric in pull-based ingestion (#19635)
• Introduced internal API for retrieving metadata about requested indices from transport actions (#18523)
• Add cluster defaults for merge autoThrottle, maxMergeThreads, and maxMergeCount; Add segment size filter to the merged segment warmer (#19629)
• Add build-tooling to run in FIPS environment (#18921)
• Add SMILE/CBOR/YAML document format support to Bulk GRPC endpoint (#19744)
• Make test-suite runnable under FIPS compliance support (#18491)
• Implement GRPC Search params Highlightand Sort (#19868)
• Implement GRPC ConstantScoreQuery, FuzzyQuery, MatchBoolPrefixQuery, MatchPhrasePrefix, PrefixQuery, MatchQuery (#19854)
• Add async periodic flush task support for pull-based ingestion (#19878)
• Add support for context aware segments (#19098)
• Implement GRPC FunctionScoreQuery (#19888)
• Implement error_trace parameter for bulk requests (#19985)
• Allow the truncate filter in normalizers (#19778)
• Support pull-based ingestion message mappers and raw payload support (#19765)
• Add search API tracker (#18601)
• Support dynamic consumer configuration update in pull-based ingestion (#19963)
• Cache the StoredFieldsReader for scroll query optimization (#20112)
• Add Hybrid Cardinality collector to prioritize Ordinals Collector (#19524)

Changed

• Combining filter rewrite and skip list to optimize sub aggregation(#19573)
• Faster terms query creation for keyword field with index and docValues enabled (#19350)
• Refactor to move prepareIndex and prepareDelete methods to Engine class (#19551)
• Omit maxScoreCollector in SimpleTopDocsCollectorContext when concurrent segment search enabled (#19584)
• Onboarding new maven snapshots publishing to s3 (#19619)
• Remove MultiCollectorWrapper and use MultiCollector in Lucene instead (#19595)
• Change implementation for percentiles aggregation for latency improvement (#19648)
• Wrap checked exceptions in painless.DefBootstrap to support JDK-25 (#19706)
• Refactor the ThreadPoolStats.Stats class to use the Builder pattern instead of constructors (#19317)
• Refactor the IndexingStats.Stats class to use the Builder pattern instead of constructors (#19306)
• Remove FeatureFlag.MERGED_SEGMENT_WARMER_EXPERIMENTAL_FLAG. (#19715)
• Replace java.security.AccessController with org.opensearch.secure_sm.AccessController in sub projects with SocketAccess class (#19803)
• Replace java.security.AccessController with org.opensearch.secure_sm.AccessController in discovery plugins (#19802)
• Change the default value of doc_values in WildcardFieldMapper to true. (#19796)
• Make Engine#loadHistoryUUID() protected and Origin#isFromTranslog() public (#19753)
• Bump opensearch-protobufs dependency to 0.23.0 and update transport-grpc module compatibility (#19831)
• Refactor the RefreshStats class to use the Builder pattern instead of constructors (#19835)
• Refactor the DocStats and StoreStats class to use the Builder pattern instead of constructors (#19863)
• Pass registry of headers from ActionPlugin.getRestHeaders to ActionPlugin.getRestHandlerWrapper (#19875)
• Refactor the Condition.Stats and DirectoryFileTransferTracker.Stats class to use the Builder pattern instead of constructors (#19862)
• Refactor the RemoteTranslogTransferTracker.Stats and RemoteSegmentTransferTracker.Stats class to use the Builder pattern instead of constructors (#19837)
• Refactor the GetStats, FlushStats and QueryCacheStats class to use the Builder pattern instead of constructors (#19935)
• Add RangeSemver for dependencies in plugin-descriptor.properties (#19939)
• Refactor the FieldDataStats and CompletionStats class to use the Builder pattern instead of constructors (#19936)
• Thread Context Preservation by gRPC Interceptor (#19776)
• Update NoOpResult constructors in the Engine to be public (#19950)
• Make XContentMapValues.filter case insensitive (#19976)
• Refactor the TranslogStats and RequestCacheStats class to use the Builder pattern instead of constructors (#19961)
• Improve performance of matrix_stats aggregation (#19989)
• Refactor the IndexPressutreStats, DeviceStats and TransportStats class to use the Builder pattern instead of constructors (#19991)
• Refactor the Cache.CacheStats class to use the Builder pattern instead of constructors (#20015)
• Refactor the HttpStats, ScriptStats, AdaptiveSelectionStats and OsStats class to use the Builder pattern instead of constructors (#20014)
• Bump opensearch-protobufs dependency to 0.24.0 and update transport-grpc module compatibility ([#20059](https://github.com/opensearc...

2.19.4

Version 2.19.4 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 2.19.4

Added

• New cluster setting search.query.max_query_string_length (#19491)

Dependencies

• Bump Apache Lucene to 9.12.3 (#19444)
• Bump org.bouncycastle:bc-fips from 2.0.0 to 2.1.2 (#19155)
• Bump org.apache.commons:commons-lang3 from 3.14.0 to 3.18.0 (#19155)
• Bump org.bouncycastle:bcprov-jdk18on from 1.78 to 1.79 (#19155)
• Bump org.bouncycastle:bcmail-jdk18on from 1.78 to 1.79 (#19155)
• Bump org.bouncycastle:bcpkix-jdk18on from 1.78 to 1.79 (#19155)
• Bump org.apache.tika from 2.9.2 to 3.2.2 (#19242)
• Bump org.apache.commons:commons-compress from 1.26.1 to 1.28.0 (#19125)
• Bump org.apache.commons:commonscodec from 1.16.1 to 1.18.0 (#19125)
• Replace commons-lang:commons-lang with org.apache.commons:commons-lang3 (#19229)
• Bump netty from 4.1.121.Final to 4.1.125.Final (#19270)
• Bump bouncycastle from 1.79 to 1.82 (#19552)
• Bump org.ajoberstar.grgit:grgit-core from 5.2.1 to 5.3.2 (#19606)
• Bump reactor-netty from 1.1.23 to 1.2.9 (#19603)
• Bump reactor from 3.5.20 to 3.7.5 (#19603)
• Bump org.apache.hadoop:hadoop-minicluster from 3.4.1 to 3.4.2 (#19605)
• Bump io.grpc deps from 1.68.2 to 1.75.0 (#19495)
• Bump com.nimbusds:nimbus-jose-jwt from 10.0.2 to 10.3 (#19604)
• Exclude commons-lang and org.jsonschema2pojo from hadoop-miniclusters (#19538)

Fixed

• Add task cancellation checks in aggregators (#18426)
• Fix OOM due to large number of shard result buffering (#19066)
• Fix QueryPhaseResultConsumer incomplete callback loops (#19231)
• Use ScoreDoc instead of FieldDoc when creating TopScoreDocCollectorManager to avoid unnecessary conversion (#18802)
• Fix IndexOutOfBoundsException when running include/exclude on non-existent prefix in terms aggregations (#19637)

Changed

• Replace centos:8 with almalinux:8 since centos docker images are deprecated (#19154)
• Allow plugins to copy folders into their config dir during installation (#19343)
• Onboarding new maven snapshots publishing to s3 (#19632)

3.3.2

Version 3.3.2 Release Notes

Compatible with OpenSearch 3.3.2 and OpenSearch Dashboards 3.3.0

Fixed

• [Star Tree] Fix sub-aggregator casting for search with profile=true (#19652)
• [Java Agent] Allow JRT protocol URLs in protection domain extraction (#19683)
• Fix bwc @timestamp upgrade issue by adding a version check on skip_list param (#19671)
• Fix issue with updating core with a patch number other than 0 (#19377)
• Fix IndexOutOfBoundsException when running include/exclude on non-existent prefix in terms aggregations (#19637)
• Add S3Repository.LEGACY_MD5_CHECKSUM_CALCULATION to list of repository-s3 settings (#19789)

Dependencies

• Bump ch.qos.logback modules from 1.5.18 to 1.5.20 in HDFS test fixture (#19764)
• Bump org.bouncycastle:bc-fips from 2.1.1 to 2.1.2 (#19817)

3.3.1

Version 3.3.1 Release Notes

OpenSearch 3.3.1 Only.

Fixed

• Fix issue with updating core with a patch number other than 0 (#19377)
• [Star Tree] Fix sub-aggregator casting for search with profile=true (#19652)
• Fix bwc @timestamp upgrade issue by adding a version check on skip_list param (#19671)

3.3.0

Version 3.3.0 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 3.3.0

Added

• Expand fetch phase profiling to support inner hits and top hits aggregation phases (#18936)
• [Rule-based Auto-tagging] add the schema for security attributes (#19345)
• Add temporal routing processors for time-based document routing (#18920)
• Implement Query Rewriting Infrastructure (#19060)
• The dynamic mapping parameter supports false_allow_templates (#19065, #19097)
• [Rule-based Auto-tagging] restructure the in-memory trie to store values as a set (#19344)
• Add a toBuilder method in EngineConfig to support easy modification of configs (#19054)
• Add StoreFactory plugin interface for custom Store implementations (#19091)
• Use S3CrtClient for higher throughput while uploading files to S3 (#18800)
• [Rule-based Auto-tagging] bug fix on Update Rule API with multiple attributes (#19497)
• Add a dynamic setting to change skip_cache_factor and min_frequency for querycache (#18351)
• Add overload constructor for Translog to accept Channel Factory as a parameter (#18918)
• Addition of fileCache activeUsage guard rails to DiskThresholdMonitor (#19071)
• Add subdirectory-aware store module with recovery support (#19132)
• [Rule-based Auto-tagging] Modify get rule api to suit nested attributes (#19429)
• [Rule-based Auto-tagging] Add autotagging label resolving logic for multiple attributes (#19486)
• Field collapsing supports search_after (#19261)
• Add a dynamic cluster setting to control the enablement of the merged segment warmer (#18929)
• Publish transport-grpc-spi exposing QueryBuilderProtoConverter and QueryBuilderProtoConverterRegistry (#18949)
• Support system generated search pipeline. (#19128)
• Add epoch_micros date format (#14669)
• Grok processor supports capturing multiple values for same field name (#18799)
• Add support for search tie-breaking by _shard_doc (#18924)
• Upgrade opensearch-protobufs dependency to 0.13.0 and update transport-grpc module compatibility (#19007)
• Add new extensible method to DocRequest to specify type (#19313)
• [Rule based auto-tagging] Add Rule based auto-tagging IT (#18550)
• Add all-active ingestion as docrep equivalent in pull-based ingestion (#19316)
• Adding logic for histogram aggregation using skiplist (#19130)
• Add skip_list param for date, scaled float and token count fields (#19142)
• Enable skip_list for @timestamp field or index sort field by default (#19480)
• Implement GRPC MatchPhrase, MultiMatch queries (#19449)
• Optimize gRPC transport thread management for improved throughput (#19278)
• Implement GRPC Boolean query and inject registry for all internal query converters (#19391)
• Added precomputation for rare terms aggregation (#18978)
• Implement GRPC Script query (#19455)
• [Search Stats] Add search & star-tree search query failure count metrics (#19210)
• [Star-tree] Support for multi-terms aggregation (#18398)
• Add stream search enabled cluster setting and auto fallback logic (#19506)
• Implement GRPC Exists, Regexp, and Wildcard queries (#19392)
• Implement GRPC GeoBoundingBox, GeoDistance queries (#19451)
• Implement GRPC Ids, Range, and Terms Set queries (#19448)
• Implement GRPC Nested query (#19453)
• Add sub aggregation support for histogram aggregation using skiplist (19438)
• Optimization in String Terms Aggregation query for Large Bucket Counts (#18732)
• New cluster setting search.query.max_query_string_length (#19491)
• Add StreamNumericTermsAggregator to allow numeric term aggregation streaming (#19335)
• Query planning to determine flush mode for streaming aggregations (#19488)
• Harden the circuit breaker and failure handle logic in query result consumer (#19396)
• Add streaming cardinality aggregator (#19484)
• Disable request cache for streaming aggregation queries (#19520)
• [WLM] add a check to stop workload group deletion having rules (#19502)

Changed

• Refactor if-else chains to use Java 17 pattern matching switch expressions (#18965)
• Add CompletionStage variants to methods in the Client Interface and default to ActionListener impl (#18998)
• IllegalArgumentException when scroll ID references a node not found in Cluster (#19031)
• Adding ScriptedAvg class to painless spi to allowlist usage from plugins (#19006)
• Make field data cache size setting dynamic and add a default limit (#19152)
• Replace centos:8 with almalinux:8 since centos docker images are deprecated (#19154)
• Add CompletionStage variants to IndicesAdminClient as an alternative to ActionListener (#19161)
• Remove cap on Java version used by forbidden APIs (#19163)
• Omit maxScoreCollector for field collapsing when sort by score descending (#19181)
• Disable pruning for doc_values for the wildcard field mapper (#18568)
• Make all methods in Engine.Result public (#19276)
• Create and attach interclusterTest and yamlRestTest code coverage reports to gradle check task (#19165)
• Optimized date histogram aggregations by preventing unnecessary object allocations in date rounding utils (19088)
• Optimize source conversion in gRPC search hits using zero-copy BytesRef (#19280)
• Allow plugins to copy folders into their config dir during installation (#19343)
• Add failureaccess as runtime dependency to transport-grpc module (#19339)
• Migrate usages of deprecated Operations#union from Lucene (#19397)
• Delegate primitive write methods with ByteSizeCachingDirectory wrapped IndexOutput (#19432)
• Bump opensearch-protobufs dependency to 0.18.0 and update transport-grpc module compatibility ([#19447](ht...

3.2.0

Version 3.2.0 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 3.2.0

Added

• [Feature Request] Enhance Terms lookup query to support query clause instead of docId (#18195)
• Add hierarchical routing processors for ingest and search pipelines (#18826)
• Add ACL-aware routing processors for ingest and search pipelines (#18834)
• Add support for Warm Indices Write Block on Flood Watermark breach (#18375)
• FS stats for warm nodes based on addressable space (#18767)
• Add support for custom index name resolver from cluster plugin (#18593)
• Rename WorkloadGroupTestUtil to WorkloadManagementTestUtil (#18709)
• Disallow resize for Warm Index, add Parameterized ITs for close in remote store (#18686)
• Ability to run Code Coverage with Gradle and produce the jacoco reports locally (#18509)
• Extend BooleanQuery must_not rewrite to numeric must, term, and terms queries (#18498)
• [Workload Management] Update logging and Javadoc, rename QueryGroup to WorkloadGroup (#18711)
• Add NodeResourceUsageStats to ClusterInfo (#18480)
• Introduce SecureHttpTransportParameters experimental API (to complement SecureTransportParameters counterpart) (#18572)
• Create equivalents of JSM's AccessController in the java agent (#18346)
• [WLM] Add WLM mode validation for workload group CRUD requests (#18652)
• Introduced a new cluster-level API to fetch remote store metadata (segments and translogs) for each shard of an index. (#18257)
• Add last index request timestamp columns to the _cat/indices API. (10766)
• Introduce a new pull-based ingestion plugin for file-based indexing (for local testing) (#18591)
• Add support for search pipeline in search and msearch template (#18564)
• [Workload Management] Modify logging message in WorkloadGroupService (#18712)
• Add BooleanQuery rewrite moving constant-scoring must clauses to filter clauses (#18510)
• Add functionality for plugins to inject QueryCollectorContext during QueryPhase (#18637)
• Add support for non-timing info in profiler (#18460)
• [Rule-based auto tagging] Bug fix and improvements (#18726)
• Extend Approximation Framework to other numeric types (#18530)
• Add Semantic Version field type mapper and extensive unit tests (#18454)
• Pass index settings to system ingest processor factories. (#18708)
• Add fetch phase profiling. (#18664)
• Include named queries from rescore contexts in matched_queries array (#18697)
• Add the configurable limit on rule cardinality (#18663)
• Disable approximation framework when dealing with multiple sorts (#18763)
• [Experimental] Start in "clusterless" mode if a clusterless ClusterPlugin is loaded (#18479)
• [Star-Tree] Add star-tree search related stats (#18707)
• Add support for plugins to profile information (#18656)
• Add support for Combined Fields query (#18724)
• Make GRPC transport extensible to allow plugins to register and expose their own GRPC services (#18516)
• Added approximation support for range queries with now in date field (#18511)
• Upgrade to protobufs 0.6.0 and clean up deprecated TermQueryProtoUtils code (#18880)
• Expand fetch phase profiling to multi-shard queries (#18887)
• Prevent shard initialization failure due to streaming consumer errors (#18877)
• APIs for stream transport and new stream-based search api action (#18722)
• Add support for custom remote store segment path prefix to support clusterless configurations (#18750)
• Added the core process for warming merged segments in remote-store enabled domains (#18683)
• Streaming aggregation (#18874)
• Optimize Composite Aggregations by removing unnecessary object allocations (#18531)
• [Star-Tree] Add search support for ip field type (#18671)
• [Derived Source] Add integration of derived source feature across various paths like get/search/recovery (#18565)
• Supporting Scripted Metric Aggregation when reducing aggregations in InternalValueCount and InternalAvg (18411))
• Support search_after numeric queries with Approximation Framework (#18896)
• Add skip_list parameter to Numeric Field Mappers (default false) (#18889)
• Optimization in Numeric Terms Aggregation query for Large Bucket Counts(#18702)
• Map to proper GRPC status codes and achieve exception handling parity with HTTP APIs(#18925)

Changed

• Update Subject interface to use CheckedRunnable (#18570)
• Update SecureAuxTransportSettingsProvider to distinguish between aux transport types (#18616)
• Make node duress values cacheable (#18649)
• Change default value of remote_data_ratio, which is used in Searchable Snapshots and Writeable Warm from 0 to 5 and min allowed value to 1 (#18767)
• Making multi rate limiters in repository dynamic #18069
• Optimize grouping for segment concurrent search by ensuring that documents within each group are as equal as possible (#18451)
• Move transport-grpc from a core plugin to a module (#18897)
• Remove experimental designation from transport-grpc settings (#18915)
• Rename package org.opensearch.plugin,transport.grpc to org.opensearch.transport.grpc (#18923)

Dependencies

• Bump stefanzweifel/git-auto-commit-action from 5 to 6 (#18524)
• Bump Apache Lucene to 10.2.2 (#18573)
• Bump org.apache.logging.log4j:log4j-core from 2.24.3 to 2.25.1 (#18589, #18744)
• Bump com.google.code.gson:gson from 2.13.0 to 2.13.1 (#18585)
• Bump com.azure:azure-core-http-netty from 1.15.11 to 1.15.12 (#18586)
• Bump com.squareup.okio:okio from 3.13.0 to 3.15.0 (#18645, #18689)
• Bump com.netflix.nebula.ospackage-base from 11.11.2 to 12.0.0 (#18646)
• Bump `com.azure:azure-storage-bl...

2.19.3

Version 2.19.3 Release Notes

Compatible with OpenSearch and OpenSearch Dashboards version 2.19.3

Added

• Reject close index requests, while remote store migration is in progress.(#18327)

Dependencies

• Bump netty from 4.1.118.Final to 4.1.121.Final (#18192)
• Bump Apache Lucene to 9.12.2 (#18574)
• Bump commons-beanutils:commons-beanutils from 1.9.4 to 1.11.0 (#18401)
• Bump org.apache.poi version from 5.2.5 to 5.4.1 in /plugins/ingest-attachment (#17887)

Fixed

• Use Bad Request status for InputCoercionException (#18161)
• Avoid NPE if on SnapshotInfo if 'shallow' boolean not present (#18187)
• Null check field names in QueryStringQueryBuilder (#18194)
• Fix illegal argument exception when creating a PIT (#16781)
• Fix the bug of Access denied error when rolling log files (#18597)

Changed

• Change single shard assignment log message from warn to debug (#18186)

3.1.0

2025-06-17 Version 3.1.0 Release Notes

[3.1]

Added

• Add support for linux riscv64 platform (#18156)
• [Rule based auto-tagging] Add get rule API (#17336)
• [Rule based auto-tagging] Add Delete Rule API (#18184)
• Add paginated wlm/stats API (#17638)
• [Rule based auto-tagging] Add Create rule API (#17792)
• Implement parallel shard refresh behind cluster settings (#17782)
• Bump OpenSearch Core main branch to 3.0.0 (#18039)
• [Rule based Auto-tagging] Add wlm ActionFilter (#17791)
• [Rule based auto-tagging] Add update rule API (#17797)
• [Rule based auto-tagging] Bug fix for update rule api (#18488)
• Update API of Message in index to add the timestamp for lag calculation in ingestion polling (#17977)
• Add Warm Disk Threshold Allocation Decider for Warm shards (#18082)
• Add composite directory factory (#17988)
• [Rule based auto-tagging] Add refresh based synchronization service for Rules (#18128)
• Add pull-based ingestion error metrics and make internal queue size configurable (#18088)
• Adding support for derive source feature and implementing it for various type of field mappers (#17759)
• [Security Manager Replacement] Enhance Java Agent to intercept newByteChannel (#17989)
• Enabled Async Shard Batch Fetch by default (#18139)
• Allow to get the search request from the QueryCoordinatorContext (#17818)
• Reject close index requests, while remote store migration is in progress.(#18327)
• Improve sort-query performance by retaining the default totalHitsThreshold for approximated match_all queries (#18189)
• Enable testing for ExtensiblePlugins using classpath plugins (#16908)
• Introduce system generated ingest pipeline (#17817))
• Added Auto Force Merge Manager to enhance hot to warm migration experience (#18229)
• Apply cluster state metadata and routing table diff when building cluster state from remote(#18256)
• Support create mode in pull-based ingestion and add retries for transient failures (#18250))
• Decouple the init of Crypto Plugin and KeyProvider in CryptoRegistry (18270))
• Support cluster write block in pull-based ingestion (#18280))
• Use QueryCoordinatorContext for the rewrite in validate API. (#18272)
• Upgrade crypto kms plugin dependencies for AWS SDK v2.x. (#18268)
• Add support for matched_fields with the unified highlighter (#18164)
• Add BooleanQuery rewrite for must_not RangeQuery clauses (#17655)
• [repository-s3] Add support for SSE-KMS and S3 bucket owner verification (#18312)
• Optimize gRPC perf by passing by reference (#18303)
• Added File Cache Stats - Involves Block level as well as full file level stats (#17538)
• Added time_in_execution attribute to /_cluster/pending_tasks response (#17780)
• Added File Cache Pinning (#17617)
• Support consumer reset in Resume API for pull-based ingestion. This PR includes a breaking change for the experimental pull-based ingestion feature. (#18332)
• Add FIPS build tooling (#4254)
• Support Nested Aggregations as part of Star-Tree (#18048)
• [Star-Tree] Support for date-range queries with star-tree supported aggregations (#17855
• Added node-left metric to cluster manager (#18421)
• [Star tree] Remove star tree feature flag and add index setting to configure star tree search on index basis (#18070)
• Approximation Framework Enhancement: Update the BKD traversal logic to improve the performance on skewed data (#18439)
• Support system generated ingest pipelines for bulk update operations (#18277))
• Added FS Health Check Failure metric (#18435)

Changed

• Create generic DocRequest to better categorize ActionRequests (#18269))
• Change implementation for percentiles aggregation for latency improvement (#18124)
• Update FipsMode check to catch NoSuchMethodError (#18427)

Dependencies

• Update Apache Lucene from 10.1.0 to 10.2.1 (#17961)
• Bump com.google.code.gson:gson from 2.12.1 to 2.13.1 (#17923, #18266)
• Bump com.github.spotbugs:spotbugs-annotations from 4.9.0 to 4.9.3 (#17922)
• Bump com.microsoft.azure:msal4j from 1.18.0 to 1.20.0 (#17925)
• Update Apache HttpClient5 and HttpCore5 (CVE-2025-27820) (#18152)
• Bump org.apache.commons:commons-collections4 from 4.4 to 4.5.0 (#18101)
• Bump netty from 4.1.118.Final to 4.1.121.Final (#18192)
• Bump org.apache.commons:commons-configuration2 from 2.11.0 to 2.12.0 (#18103, #18262)
• Bump com.nimbusds:nimbus-jose-jwt from 10.0.2 to 10.3 (#18104, #18336)
• Bump org.apache.commons:commons-text from 1.13.0 to 1.13.1 (#18102)
• Bump reactor-netty from 1.2.4 to 1.2.5 (#18243)
• Bump reactor from 3.5.20 to 3.7.5 (#18243)
• Bump com.azure:azure-core-http-netty from 1.15.7 to 1.15.11 (#18265)
• Bump lycheeverse/lychee-action from 2.4.0 to 2.4.1 (#18264)
• Bump com.maxmind.geoip2:geoip2 from 4.2.1 to 4.3.1 (#18263, #18413)
• Bump com.azure:azure-json from 1.3.0 to 1.5.0 (#18335)
• Bump org.jline:jline from 3.29.0 to 3.30.4 (#18368, #18414)
• Bump com.nimbusds:oauth2-oidc-sdk from 11.23.1 to 11.25 (#18369)
• Bump gradle/actions from 3 to 4 (#18371)
• Bump com.azure:azure-storage-common from 12.28.0 to 12.29.0 (#18415)
• Bump com.squareup.okio:okio from 3.10.2 to 3.12.0 (#18468)
• Bump com.azure:azure-xml from 1.1.0 to 1.2.0 ([#18469](#1...