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Elasticsearch release notes [elasticsearch-release-notes]

Review the changes, fixes, and more in each version of Elasticsearch.

To check for security updates, go to Security announcements for the Elastic stack.

% Release notes include only features, enhancements, and fixes. Add breaking changes, deprecations, and known issues to the applicable release notes sections.

% ## version.next [felasticsearch-next-release-notes] % Release date: Month day, year

% ### Features and enhancements [elasticsearch-next-features-enhancements] % *

% ### Fixes [elasticsearch-next-fixes] % *

9.0.0 [elasticsearch-900-release-notes]

Release date: March 25, 2025

Features and enhancements [elasticsearch-900-features-enhancements]

Allocation : * Only publish desired balance gauges on master #115383

Authorization : * Add a monitor_stats privilege and allow that privilege for remote cluster privileges #114964

  • [Security Solution] Add create_index to kibana_system role for index/DS .logs-endpoint.action.responses-* #115241

CRUD : * Suppress merge-on-recovery for older indices #113462

Data streams : * Adding a deprecation info API warning for data streams with old indices #116447

  • Apm-data: disable date_detection for all apm data streams #116995
  • Add default ILM policies and switch to ILM for apm-data plugin #115687

Distributed : * Metrics for incremental bulk splits #116765

  • Use Azure blob batch API to delete blobs in batches #114566

ES|QL : * Add ES|QL bit_length function #115792

  • ESQL: Honor skip_unavailable setting for nonmatching indices errors at planning time #116348 (issue: #114531)
  • ESQL: Remove parent from FieldAttribute #112881
  • ESQL: extract common filter from aggs #115678
  • ESQL: optimise aggregations filtered by false/null into evals #115858
  • ES|QL CCS uses skip_unavailable setting for handling disconnected remote clusters #115266 (issue: #114531)
  • ES|QL: add metrics for functions #114620
  • Esql Enable Date Nanos (tech preview) #117080
  • Support partial sort fields in TopN pushdown #116043 (issue: #114515)
  • [ES|QL] Implicit casting string literal to intervals #115814 (issue: #115352)
  • Add support for BYTE_LENGTH scalar function #116591
  • Esql/lookup join grammar #116515
  • Remove snapshot build restriction for match and qstr functions #114482

Health : * Increase replica_unassigned_buffer_time default from 3s to 5s #112834

Indices APIs : * Ensure class resource stream is closed in ResourceUtils #116437

Inference : * Add version prefix to Inference Service API path #117095

Infra/Circuit Breakers : * Add link to Circuit Breaker "Data too large" exception message #113561

Infra/Core : * Support for unsigned 64 bit numbers in Cpu stats #114681 (issue: #112274)

Infra/Metrics : * Add ensureGreen test method for use with adminClient #113425

Infra/Scripting : * Add a mustache.max_output_size_bytes setting to limit the length of results from mustache scripts #114002

Ingest Node : * Add postal_code support to the City and Enterprise databases #114193

  • Add support for registered country fields for maxmind geoip databases #114521
  • Adding support for additional mapping to simulate ingest API #114742
  • Adding support for simulate ingest mapping adddition for indices with mappings that do not come from templates #115359
  • Support IPinfo database configurations #114548
  • Support more maxmind fields in the geoip processor #114268

Logs : * Add logsdb telemetry #115994

  • Add num docs and size to logsdb telemetry #116128
  • Feature: re-structure document ID generation favoring _id inverted index compression #104683

Machine Learning : * Add DeBERTa-V2/V3 tokenizer #111852

  • Add special case for elastic reranker in inference API #116962
  • Adding inference endpoint validation for AzureAiStudioService #113713
  • Adds support for input_type field to Vertex inference service #116431
  • Enable built-in Inference Endpoints and default for Semantic Text #116931
  • Increase default queue_capacity to 10_000 and decrease max queue_capacity to 100_000 #115041
  • Inference duration and error metrics #115876
  • Remove all mentions of eis and gateway and deprecate flags that do #116692
  • [Inference API] Add API to get configuration of inference services #114862
  • [Inference API] Improve chunked results error message #115807

Network : * Allow http unsafe buffers by default #116115

Recovery : * Attempt to clean up index before remote transfer #115142 (issue: #104473)

  • Trigger merges after recovery #113102

Reindex : * Change Reindexing metrics unit from millis to seconds #115721

Relevance : * Add query rules retriever #114855

  • Add tracking for query rule types #116357

Search : * Add Search Phase APM metrics #113194

  • Add docvalue_fields Support for dense_vector Fields #114484 (issue: #108470)
  • Add initial support for semantic_text field type #113920
  • Adds access to flags no_sub_matches and no_overlapping_matches to hyphenation-decompounder-tokenfilter #115459 (issue: #97849)
  • Better sizing BytesRef for Strings in Queries #115655
  • Enable _tier based coordinator rewrites for all indices (not just mounted indices) #115797
  • Only aggregations require at least one shard request #115314
  • ESQL - Add match operator (:) #116819
  • Upgrade to Lucene 10 #114741

Security : * Add refresh .security index call between security migrations #114879

Snapshot/Restore : * Improve message about insecure S3 settings #116915

  • Retry S3BlobContainer#getRegister on all exceptions #114813
  • Split searchable snapshot into multiple repo operations #116918
  • Track shard snapshot progress during node shutdown #112567

Vector Search : * Add support for bitwise inner-product in painless #116082

Fixes [elasticsearch-900-fixes]

Aggregations : * Handle with illegalArgumentExceptions negative values in HDR percentile aggregations #116174 (issue: #115777)

Analysis : * Adjust analyze limit exception to be a bad_request #116325

CCS : * Fix long metric deserialize & add - auto-resize needs to be set manually #117105 (issue: #116914)

CRUD : * Preserve thread context when waiting for segment generation in RTG #114623

  • Standardize error code when bulk body is invalid #114869

Data streams : * Add missing header in put_data_lifecycle rest-api-spec #116292

EQL : * Don’t use a BytesStreamOutput to copy keys in BytesRefBlockHash #114819 (issue: #114599)

ES|QL : * Added stricter range type checks and runtime warnings for ENRICH #115091 (issues: #107357, #116799)

  • Don’t return TEXT type for functions that take TEXT #114334 (issues: #111537, #114333)
  • ESQL: Fix sorts containing _source #116980 (issue: #116659)
  • ESQL: fix the column position in errors #117153
  • ES|QL: Fix stats by constant expression #114899
  • Fix NPE in EnrichLookupService on mixed clusters with <8.14 versions #116583 (issues: #116529, #116544)
  • Fix TDigestState.read CB leaks #114303 (issue: #114194)
  • Fixing remote ENRICH by pushing the Enrich inside FragmentExec #114665 (issue: #105095)
  • Use SearchStats instead of field.isAggregatable in data node planning #115744 (issue: #115737)
  • [ESQL] Fix Binary Comparisons on Date Nanos #116346
  • [ES|QL] To_DatePeriod and To_TimeDuration return better error messages on union_type fields #114934

Infra/CLI : * Fix NPE on plugin sync #115640 (issue: #114818)

Infra/Metrics : * Make randomInstantBetween always return value in range [minInstant, maxInstant] #114177

Infra/REST API : * Fixed a NullPointerException in _capabilities API when the path parameter is null. #113413 (issue: #113413)

Infra/Settings : * Don’t allow secure settings in YML config (109115) #115779 (issue: #109115)

Ingest Node : * Add warning headers for ingest pipelines containing special characters #114837 (issue: #104411)

  • Reducing error-level stack trace logging for normal events in GeoIpDownloader #114924

Logs : * Always check if index mode is logsdb #116922

  • Prohibit changes to index mode, source, and sort settings during resize #115812

Machine Learning : * Fix bug in ML autoscaling when some node info is unavailable #116650

Mapping : * Change synthetic source logic for constant_keyword #117182 (issue: #117083)

  • Ignore conflicting fields during dynamic mapping update #114227 (issue: #114228)

Network : * Use underlying ByteBuf refCount for ReleasableBytesReference #116211

Ranking : * Propagating nested inner_hits to the parent compound retriever #116408 (issue: #116397)

Relevance : * Fix handling of bulk requests with semantic text fields and delete ops #116942

Search : * Catch and handle disconnect exceptions in search #115836

  • Fields caps does not honour ignore_unavailable #116021 (issue: #107767)
  • Fix handling of time exceeded exception in fetch phase #116676
  • Fix leak in DfsQueryPhase and introduce search disconnect stress test #116060 (issue: #115056)
  • Inconsistency in the _analyzer api when the index is not included #115930
  • Semantic text simple partial update #116478
  • Updated Date Range to Follow Documentation When Assuming Missing Values #112258 (issue: #111484)
  • Validate missing shards after the coordinator rewrite #116382
  • _validate does not honour ignore_unavailable #116656 (issue: #116594)

Snapshot/Restore : * Retry throttled snapshot deletions #113237

Vector Search : * Update Semantic Query To Handle Zero Size Responses #116277 (issue: #116083)

Watcher : * Watch Next Run Interval Resets On Shard Move or Node Restart #115102 (issue: #111433)

Deprecations [deprecation-9.0.0]

Ingest Node : * Fix _type deprecation on simulate pipeline API #116259

Machine Learning : * [Inference API] Deprecate elser service #113216

Mapping : * Deprecate _source.mode in mappings #116689