Elasticsearch version 8.12.1edit
Also see Breaking changes in 8.12.
Bug fixesedit
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Allocation
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Improve
CANNOT_REBALANCE_CAN_ALLOCATE explanation #104904
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Application
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[Connector API] Fix bug in configuration validation parser #104198
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[Connector API] Fix bug when triggering a sync job via API #104802
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[Profiling] Query in parallel on content nodes #104600
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Data streams
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Data streams fix failure store delete #104281
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Fix _alias/<alias> returning non-matching data streams #104145 (issue: #96589)
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Downsampling
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ES|QL
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Avoid execute ESQL planning on refresh thread #104591
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ESQL: Allow grouping by null blocks #104523
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ESQL: Fix
SearchStats#count(String) to count values not rows #104891 (issue: #104795)
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Limit concurrent shards per node for ESQL #104832 (issue: #103666)
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Reduce the number of Evals
ReplaceMissingFieldWithNull creates #104586 (issue: #104583)
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Infra/Resiliency
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Limit nesting depth in Exception XContent #103741
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Ingest Node
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Better handling of async processor failures #104289 (issue: #101921)
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Ingest correctly handle upsert operations and drop processors together #104585 (issue: #36746)
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Machine Learning
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Add retry logic for 500 and 503 errors for OpenAI #103819
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Avoid possible datafeed infinite loop with filtering aggregations #104722 (issue: #104699)
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[LTR]
FieldValueExtrator - Checking if fetched values is empty #104314
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Network
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Fix lost headers with chunked responses #104808
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Search
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Don’t throw error for remote shards that open PIT filtered out #104288 (issue: #102596)
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Snapshot/Restore
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Fix deleting index during snapshot finalization #103817 (issue: #101029)
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TSDB
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Fix
routing_path when template has multiple path_match and multi-fields #104418 (issue: #104400)
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Transform
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Fix bug when
latest transform is used together with from parameter #104606 (issue: #104543)
Deprecationsedit
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Machine Learning
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Deprecate machine learning on Intel macOS #104087