IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elasticsearch Guide [8.18] ›Release notes

Elasticsearch version 8.18.2

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A newer version is available. Check out the latest documentation.

Elasticsearch version 8.18.2

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Also see Breaking changes in 8.18.

Breaking changes

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Snapshot/Restore
  • Make S3 custom query parameter optional #128043

Bug fixes

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Aggregations
  • Fix a bug in significant_terms #127975
Audit
  • Handle streaming request body in audit log #127798
Data streams
  • Fix system data streams incorrectly showing up in the list of template validation problems #128161
Downsampling
  • Downsampling does not consider passthrough fields as dimensions #127752 (issue: #125156)
ES|QL
  • Ensure ordinal builder emit ordinal blocks #127949
  • Fix union types in CCS #128111
Infra/Core
  • Add missing outbound_network entitlement to x-pack-core #126992 (issue: #127003)
  • Check hidden frames in entitlements #127877
Infra/Scripting
  • Avoid nested docs in painless execute api #127991 (issue: #41004)
Logs
  • Fix an authorization error when LogsPatternUsageService attempts to update logsdb.prior_logs_usage cluster setting. #128050
Machine Learning
  • Append all data to Chat Completion buffer #127658
  • Fix services API Google Vertex AI Rerank location field requirement #127856
  • Use internal user for internal inference action #128327
Relevance
  • Fix: Add NamedWriteable for RuleQueryRankDoc #128153 (issue: #126071)
Security
  • Remove dangling spaces wherever found #127475
Snapshot/Restore
  • Add missing entitlement to repository-azure #128047 (issue: #128046)
TSDB
  • Skip the validation when retrieving the index mode during reindexing a time series data stream #127824

Enhancements

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Authentication
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