Always check the parent breaker with zero bytes in PreallocatedCircuitBreakerService #115181
Force using the last centroid during merging #111644 (issue: #111065)

Authentication

Check for disabling own user in Put User API #112262 (issue: #90205)
Expose cluster-state role mappings in APIs #114951

Authorization

Fix DLS & FLS sometimes being enforced when it is disabled #111915 (issue: #94709)
Fix DLS using runtime fields and synthetic source #112341

CRUD

Don’t fail retention lease sync actions due to capacity constraints #109414 (issue: #105926)

Cluster Coordination

Ensure clean thread context in MasterService #114512

Data streams

Adding support for data streams with a match-all template #111311 (issue: #111204)
Exclude internal data streams from global retention #112100
Fix verbose get data stream API not requiring extra privileges #112973
OTel mappings: avoid metrics to be rejected when attributes are malformed #114856
Resolve pipelines from template on lazy rollover write #116031 (issue: #112781)
[apm-data] Apply lazy rollover on index template creation #116219 (issue: #116230)
[otel-data] Add more kubernetes aliases #115429
logs-apm.error-*: define log.level field as keyword #112440

Distributed

Handle InternalSendException inline for non-forking handlers #114375

EQL

Fix validation of TEXT fields with case insensitive comparison #111238 (issue: #111235)

ES|QL

Add Values aggregation tests, fix ConstantBytesRefBlock memory handling #111367
Align year diffing to the rest of the units in DATE_DIFF: chronological #113103 (issue: #112482)
Disable pushdown of WHERE past STATS #115308 (issue: #115281)
Fix CASE when conditions are multivalued #112401 (issue: #112359)
Fix DEBUG log of filter #116086 (issue: #116055)
Fix Double operations returning infinite #111064 (issue: #111026)
Fix REVERSE with backspace character #115245 (issues: #114372, #115227, #115228)
Fix a bug in VALUES agg #115952
Fix a bug in MV_PERCENTILE #112218 (issues: #112193, #112180, #112187, #112188)
Fix filtered grouping on ords #115312 (issue: #114897)
Fix grammar changes around per agg filtering #114848
Fix serialization during can_match #111779 (issues: #111701, #111726)
Fix synthetic attribute pruning #111413 (issue: #105821)
Don’t lose the original casting error message #111968 (issue: #111967)
Fix for missing indices error message #111797 (issue: #111712)
Restrict sorting for _source and counter field types #114638 (issues: #114423, #111976)
Better validation for GROK patterns #110574 (issue: #110533)
Better validation for RLIKE patterns #112489 (issue: #112485)
Better validation of GROK patterns #112200 (issue: #112111)
Fix LIMIT pushdown past MV_EXPAND #115624 (issues: #102084, #102061)
Fix ST_CENTROID_AGG when no records are aggregated #114888 (issue: #106025)
Spatial search functions support multi-valued fields in compute engine #112063 (issues: #112102, #112505, #110830)
Check expression resolved before checking its data type in ImplicitCasting #113314 (issue: #113242)
Simplify patterns for subfields #111118
Simplify syntax of named parameter for identifier and pattern #115061
Skip validating remote cluster index names in parser #114271
Use RangeQuery and String in BinaryComparison on datetime fields #110669 (issue: #107900)
Verify aggregation filter’s type is boolean to avoid class_cast_exception #116274
Add tests for stats by constant #110593 (issue: #105383)
Make named parameter for identifier and pattern snapshot #114784
Validate mv_sort order #110021 (issue: #109910)

Geo

Fix cases of collections with one point #111193 (issue: #110982)
Try to simplify geometries that fail with TopologyException #115834

Health

Set replica_unassigned_buffer_time in constructor #112612

ILM+SLM

Make SnapshotLifecycleStats immutable so SnapshotLifecycleMetadata.EMPTY isn’t changed as side-effect #111215

Indices APIs

Align dot prefix validation with Serverless #116266
Revert "Add ResolvedExpression wrapper" #115317

Infra/Core

Fix max file size check to use getMaxFileSize #113723 (issue: #113705)
Guard blob store local directory creation with doPrivileged #115459
Handle BigInteger in xcontent copy #111937 (issue: #111812)
Report JVM stats for all memory pools (97046) #115117 (issue: #97046)
ByteArrayStreamInput: Return -1 when there are no more bytes to read #112214

Infra/Logging

Only emit product origin in deprecation log if present #111683 (issue: #81757)

Infra/Settings

GET _cluster/settings with include_defaults returns the expected fallback value if defined in elasticsearch.yml #110816 (issue: #110815)

Ingest Node

Fix IPinfo geolocation schema #115147
Fix getDatabaseType for unusual MMDBs #112888

License

Fix Start Trial API output acknowledgement header for features #111740 (issue: #111739)
Fix TokenService always appearing used in Feature Usage #112263 (issue: #61956)
Fix lingering license warning header in IP filter #115510 (issue: #114865)

Logs

Do not expand dots when storing objects in ignored source #113910
Fix ignore_above handling in synthetic source when index level setting is used #113570 (issue: #113538)
Fix synthetic source for flattened field when used with ignore_above #113499 (issue: #112044)
Prohibit changes to index mode, source, and sort settings during restore #115811

Machine Learning

Avoid ModelAssignment deadlock #109684
Avoid catch (Throwable t) in AmazonBedrockStreamingChatProcessor #115715
Allow for pytorch_inference results to include zero-dimensional tensors
Empty percentile results no longer throw no_such_element_exception in Anomaly Detection jobs #116015 (issue: #116013)
Fix NPE in Get Deployment Stats #115404
Fix bug in ML serverless autoscaling which prevented trained model updates from triggering a scale up #110734
Fix stream support for TaskType.ANY #115656
Fix parameter initialization for large forecasting models #2759
Forward bedrock connection errors to user #115868
Ignore unrecognized openai sse fields #114715
Prevent NPE if model assignment is removed while waiting to start #115430
Send mid-stream errors to users #114549
Temporarily return both modelId and inferenceId for GET /_inference until we migrate clients to only inferenceId #111490
Warn for model load failures if they have a status code <500 #113280
[Inference API] Remove unused Cohere rerank service settings fields in a BWC way #110427
[ML] Create Inference API will no longer return model_id and now only return inference_id #112508

Mapping

Fix MapperBuilderContext#isDataStream when used in dynamic mappers #110554
Fix synthetic source field names for multi-fields #112850
Retrieve the source for objects and arrays in a separate parsing phase #113027 (issue: #112374)
Two empty mappings now are created equally #107936 (issue: #107031)

Ranking

Fix MLTQuery handling of custom term frequencies #110846
Fix RRF validation for rank_constant < 1 #112058
Fix score count validation in reranker response #111212 (issue: #111202)

Search

Allow for querries on _tier to skip shards in the can_match phase #114990 (issue: #114910)
Allow out of range term queries for numeric types #112916
Do not exclude empty arrays or empty objects in source filtering #112250 (issue: #109668)
Fix synthetic source handling for bit type in dense_vector field #114407 (issue: #114402)
Improve DateTime error handling and add some bad date tests #112723 (issue: #112190)
Improve date expression/remote handling in index names #112405 (issue: #112243)
Make "too many clauses" throw IllegalArgumentException to avoid 500s #112678 (issue: #112177)
Make empty string searches be consistent with case (in)sensitivity #110833
Prevent flattening of ordered and unordered interval sources #114234
Remove needless forking to GENERIC in TransportMultiSearchAction #110796
Search/Mapping: KnnVectorQueryBuilder support for allowUnmappedFields #107047 (issue: #106846)
Span term query to convert to match no docs when unmapped field is targeted #113251
Speedup CanMatchPreFilterSearchPhase constructor #110860
Update BlobCacheBufferedIndexInput::readVLong to correctly handle negative long values #115594
[8.x] Limit the number of tasks that a single search can submit #115932

Security

Add ECK Role Mapping Cleanup #115823
Updated the transport CA name in Security Auto-Configuration. #106520 (issue: #106455)

Snapshot/Restore

Handle status code 0 in S3 CMU response #116212 (issue: #102294)

TSDB

Implement parseBytesRef for TimeSeriesRoutingHashFieldType #113373 (issue: #112399)

Task Management

Improve handling of failure to create persistent task #114386

Transform

Allow task canceling of validate API calls #110951
Include reason when no nodes are found #112409 (issue: #112404)

Vector Search

Fix dim validation for bit element_type #114533
Support semantic_text in object fields #114601 (issue: #114401)

Watcher

Truncating watcher history if it is too large #111245 (issue: #94745)

Deprecations

edit

Analysis

Deprecate dutch_kp and lovins stemmer as they are removed in Lucene 10 #113143
deprecate edge_ngram side parameter #110829

CRUD

Deprecate dot-prefixed indices and composable template index patterns #112571

Search

Adding deprecation warnings for rrf using rank and sub_searches #114854
Deprecate legacy params from range query #113286

Enhancements

edit

Aggregations

Account for DelayedBucket before reduction #113013
Add protection for OOM during aggregations partial reduction #110520
Deduplicate BucketOrder when deserializing #112707
Lower the memory footprint when creating DelayedBucket #112519
Reduce heap usage for AggregatorsReducer #112874
Remove reduce and reduceContext from DelayedBucket #112547

Allocation

Add link to flood-stage watermark exception message #111315
Always allow rebalancing by default #111015

Application

[Profiling] add container.id field to event index template #111969

Authorization

Add manage roles privilege #110633
Add privileges required for CDR misconfiguration features to work on AWS SecurityHub integration #112574

Codec

Remove zstd feature flag for index codec best compression #112665
[8.x] Remove zstd feature flag for index codec best compression #112857

Data streams

Add verbose flag retrieving maximum_timestamp for get data stream API #112303
Display effective retention in the relevant data stream APIs #112019
Expose global retention settings via data stream lifecycle API #112210
Ignore warning on yaml test put template #116201 (issue: #116158)
Make ecs@mappings work with OTel attributes #111600

Distributed

Add link to Max Shards Per Node exception message #110993

ES|QL

Add EXP ES|QL function #110879
Delay construction of warnings #114368
Add CircuitBreaker to TDigest, Step 3: Connect with ESQL CB #113387
Add CircuitBreaker to TDigest, Step 4: Take into account shallow classes size #113613 (issue: #113916)
Collect and display execution metadata for ES|QL cross cluster searches #112595 (issue: #112402)
Add support for multivalue fields in Arrow output #114774
BUCKET: allow numerical spans as whole numbers #111874 (issues: #104646, #109340, #105375)
Have BUCKET generate friendlier intervals #111879 (issue: #110916)
Profile more timing information #111855
Push down filters even in case of renames in Evals #114411
Speed up CASE for some parameters #112295
Speed up grouping by bytes #114021
Support INLINESTATS grouped on expressions #111690
Use less memory in listener #114358
Add support for cached strings in plan serialization #112929
Add Telemetry API and track top functions #111226
Enhance SORT push-down to Lucene to cover references to fields and ST_DISTANCE function #112938 (issue: #109973)
Siem ea 9521 improve test #111552
Support multi-valued fields in compute engine for ST_DISTANCE #114836 (issue: #112910)
Add SPACE function #112350
Add finish() elapsed time to aggregation profiling times #113172 (issue: #112950)
Make query wrapped by SingleValueQuery cacheable #110116
Add hypot function #114382
Cast mixed numeric types to a common numeric type for Coalesce and In at Analyzer #111917 (issue: #111486)
Combine Disjunctive CIDRMatch #111501 (issue: #105143)
Create Range in PushFiltersToSource for qualified pushable filters on the same field #111437
Name parameter with leading underscore #111950 (issue: #111821)
Named parameter for field names and field name patterns #112905
Validate index name in parser #112081
Add reverse function #113297
Explicit cast a string literal to date_period and time_duration in arithmetic operations #109193

Experiences

Integrate IBM watsonx to Inference API for text embeddings #111770

Geo

Add support for spatial relationships in point field mapper #112126
Small performance improvement in h3 library #113385
Support docvalues only query in shape field #112199

Health

(API) Cluster Health report unassigned_primary_shards #112024
Do not treat replica as unassigned if primary recently created and unassigned time is below a threshold #112066

ILM+SLM

ILM: Add total_shards_per_node setting to searchable snapshot #112972 (issue: #112261)
PUT slm policy should only increase version if actually changed #111079
Preserve Step Info Across ILM Auto Retries #113187
Register SLM run before snapshotting to save stats #110216
SLM interval schedule followup - add back getFieldName style getters #112123

Infra/Core

Add nanos support to ZonedDateTime serialization #111689 (issue: #68292)
Extend logging for dropped warning headers #111624 (issue: #90527)
Give the kibana system user permission to read security entities #114363

Infra/Metrics

Add TaskManager to pluginServices #112687

Infra/REST API

Optimize the loop processing of URL decoding #110237 (issue: #110235)

Infra/Scripting

Expose HexFormat in Painless #112412

Infra/Settings

Improve exception message for bad environment variable placeholders in settings #114552 (issue: #110858)
Reprocess operator file settings when settings service starts, due to node restart or master node change #114295

Ingest Node

Add size_in_bytes to enrich cache stats #110578
Add support for templates when validating mappings in the simulate ingest API #111161
Adding index_template_substitutions to the simulate ingest API #114128
Adding component template substitutions to the simulate ingest API #113276
Adding mapping validation to the simulate ingest API #110606
Adds example plugin for custom ingest processor #112282 (issue: #111539)
Fix unnecessary mustache template evaluation #110986 (issue: #110191)
Listing all available databases in the _ingest/geoip/database API #113498
Make enrich cache based on memory usage #111412 (issue: #106081)
Tag redacted document in ingest metadata #113552
Verify Maxmind database types in the geoip processor #114527

Logs

Add validation for synthetic source mode in logs mode indices #110677
Store original source for keywords using a normalizer #112151

Machine Learning

Add Completion Inference API for Alibaba Cloud AI Search Model #112512
Add Streaming Inference spec #113812
Add chunking settings configuration to CohereService, AmazonBedrockService, and AzureOpenAiService #113897
Add chunking settings configuration to ElasticsearchService/ELSER #114429
Add custom rule parameters to force time shift #110974
Adding chunking settings to GoogleVertexAiService, AzureAiStudioService, and AlibabaCloudSearchService #113981
Adding chunking settings to MistralService, GoogleAiStudioService, and HuggingFaceService #113623
Adds a new Inference API for streaming responses back to the user. #113158
Allow users to force a detector to shift time series state by a specific amount #2695
Create StreamingHttpResultPublisher #112026
Create an ml node inference endpoint referencing an existing model #114750
Default inference endpoint for ELSER #113873
Default inference endpoint for the multilingual-e5-small model #114683
Dynamically get of num allocations #114636
Enable OpenAI Streaming #113911
Filter empty task settings objects from the API response #114389
Migrate Inference to ChunkedToXContent #111655
Register Task while Streaming #112369
Server-Sent Events for Inference response #112565
Stream Anthropic Completion #114321
Stream Azure Completion #114464
Stream Bedrock Completion #114732
Stream Cohere Completion #114080
Stream Google Completion #114596
Stream OpenAI Completion #112677
Support sparse embedding models in the elasticsearch inference service #112270
Switch default chunking strategy to sentence #114453
Update the Pytorch library to version 2.3.1 #2688
Upgrade to AWS SDK v2 #114309 (issue: #110590)
Use the same chunking configurations for models in the Elasticsearch service #111336
Validate streaming HTTP Response #112481
Wait for allocation on scale up #114719
[Inference API] Add Alibaba Cloud AI Search Model support to Inference API #111181
[Inference API] Add Docs for AlibabaCloud AI Search Support for the Inference API #111181
[Inference API] Introduce Update API to change some aspects of existing inference endpoints #114457
[Inference API] Prevent inference endpoints from being deleted if they are referenced by semantic text #110399
[Inference API] alibabacloud ai search service support chunk infer to support semantic_text field #110399

Mapping

Add Field caps support for Semantic Text #111809
Add Lucene segment-level fields stats #111123
Add Search Inference ID To Semantic Text Mapping #113051
Add object param for keeping synthetic source #113690
Add support for multi-value dimensions #112645 (issue: #110387)
Allow dimension fields to have multiple values in standard and logsdb index mode #112345 (issues: #112232, #112239)
Allow fields with dots in sparse vector field mapper #111981 (issue: #109118)
Allow querying index_mode #110676
Configure keeping source in FieldMapper #112706
Control storing array source with index setting #112397
Introduce mode subobjects=auto for objects #110524
Update semantic_text field to support indexing numeric and boolean data types #111284
Use fallback synthetic source for copy_to and doc_values: false cases #112294 (issues: #110753, #110038, #109546)

Network

Add links to network disconnect troubleshooting #112330

Ranking

Add timeout and cancellation check to rescore phase #115048

Relevance

Add a query rules tester API call #114168

Search

Add more dense_vector details for cluster stats field stats #113607
Add range and regexp Intervals #111465
Adding support for allow_partial_search_results in PIT #111516
Allow incubating Panama Vector in simdvec, and add vectorized ipByteBin #112933
Avoid using concurrent collector manager in LuceneChangesSnapshot #113816
Bool query early termination should also consider must_not clauses #115031
Deduplicate Kuromoji User Dictionary #112768
Multi term intervals: increase max_expansions #112826 (issue: #110491)
Search coordinator uses event.ingested in cluster state to do rewrites #111523
Update cluster stats for retrievers #114109

Security

(logger) change from error to warn for short circuiting user #112895
Add asset criticality indices for kibana_system_user #113588
Add tier preference to security index settings allowlist #111818
[Service Account] Add AutoOps account #111316

Snapshot/Restore

Add max_multipart_parts setting to S3 repository #113989
Add support for Azure Managed Identity #111344
Add telemetry for repository usage #112133
Add workaround for missing shard gen blob #112337
Clean up dangling S3 multipart uploads #111955 (issues: #101169, #44971)
Execute shard snapshot tasks in shard-id order #111576 (issue: #108739)
Include account name in Azure settings exceptions #111274
Introduce repository integrity verification API #112348 (issue: #52622)

Stats

Track search and fetch failure stats #113988

TSDB

Add support for boolean dimensions #111457 (issue: #111338)
Stop iterating over all fields to extract @timestamp value #110603 (issue: #92297)
Support booleans in routing path #111445

Vector Search

Dense vector field types updatable for int4 #110928
Use native scalar scorer for int8_flat index #111071

New features

edit

Data streams

Introduce global retention in data stream lifecycle. #111972
X-pack/plugin/otel: introduce x-pack-otel plugin #111091

ES|QL

Add match function #113374
Add MV_PSERIES_WEIGHTED_SUM for score calculations used by security solution #109017
Add async ID and is_running headers to ESQL async query #111840
Add boolean support to Max and Min aggs #110527
Add boolean support to TOP aggregation #110718
Added mv_percentile function #111749 (issue: #111591)
INLINESTATS #109583 (issue: #107589)
Introduce per agg filter #113735
Strings support for MAX and MIN aggregations #111544
Support IP fields in MAX and MIN aggregations #110921
TOP aggregation IP support #111105
TOP support for strings #113183 (issue: #109849)
mv_median_absolute_deviation function #112055 (issue: #111590)
Add MATCH operator #110971

ILM+SLM

SLM Interval based scheduling #110847

Inference

EIS integration #111154

Ingest Node

Add a terminate ingest processor #114157 (issue: #110218)

Machine Learning

Inference autoscaling #109667
Telemetry for inference adaptive allocations #110630

Relevance

[Query rules] Add exclude query rule type #111420

Search

Async search: Add ID and "is running" http headers #112431 (issue: #109576)
Cross-cluster search telemetry #113825

Vector Search

Adding new bbq index types behind a feature flag #114439

Upgrades

edit

Infra/Core

Upgrade xcontent to Jackson 2.17.0 #111948
Upgrade xcontent to Jackson 2.17.2 #112320

Infra/Metrics

Update APM Java Agent to support JDK 23 #115194 (issues: #115101, #115100)

Search

Upgrade to Lucene 9.12 #113333

Snapshot/Restore

Upgrade Azure SDK #111225
Upgrade repository-azure dependencies #112277

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