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Elasticsearch version 8.15.4

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Elasticsearch version 8.15.4

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Also see Breaking changes in 8.15.

Bug fixes

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Aggregations

Always check the parent breaker with zero bytes in PreallocatedCircuitBreakerService #115181

ES|QL

ESQL: Disable pushdown of WHERE past STATS #115308 (issue: #115281)

Geo

Try to simplify geometries that fail with TopologyException #115834

Infra/Core

Guard blob store local directory creation with doPrivileged #115459

License

Fix lingering license warning header in IP filter #115510 (issue: #114865)

Search

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)

Vector Search

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

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