Elasticsearch version 8.15.5
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Also see Breaking changes in 8.15.
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Machine Learning
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Fix bug in ML autoscaling when some node info is unavailable #116650
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Mapping
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Change synthetic source logic for
constant_keyword
#117182 (issue: #117083)
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Relevance
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Fix handling of bulk requests with semantic text fields and delete ops #116942
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Vector Search
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Update Semantic Query To Handle Zero Size Responses #116277 (issue: #116083)
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Data streams
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Apm-data: disable date_detection for all apm data streams #116995