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Elasticsearch version 8.17.5

IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Elasticsearch version 8.17.5

Also see Breaking changes in 8.17.

Bug fixes

Authentication

Fix NPE for missing Content Type header in OIDC Authenticator #126191

ES|QL

Fix ReplaceMissingFieldsWithNull #125764 (issues: #126036, #121754, #126030)
Fix usage of already released null block in ValueSourceReaderOperator #126411 (issue: #125850)

Machine Learning

Fixing bedrock event executor terminated cache issue #118177 (issue: #117916)

Search

Re-enable parallel collection for field sorted top hits #125916
Support indices created in ESv6 and updated in ESV7 using different LuceneCodecs as archive in current version. #125389

TLS

Set keyUsage for generated HTTP certificates and self-signed CA #126376 (issue: #117769)

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