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Support flat_object fields as Parquet MAP columns
- #22741
#22741
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Support flat_object fields as Parquet MAP columns
#22741
Bukhtawar
wants to merge 12 commits into
opensearch-project:main
opensearch-project/OpenSearch:main
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Bukhtawar:flat-object-map-support
Bukhtawar/OpenSearch:flat-object-map-support
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Commits on Aug 12, 2026
Add core multi_value mapping parameter for field arity
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Commits on Aug 14, 2026
Support multi-value keyword fields in composite Parquet indexing
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Preserve empty arrays as empty lists in Parquet multi-value fields
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Harden multi-value field accumulation and document invariants
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Commits on Aug 16, 2026
Support flat_object fields as Parquet MAP columns
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Add flat_object MAP column indexing IT; omit rather than throw in deriveSource
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Commits on Aug 17, 2026
Add REST QA verification for flattened attribute indexing
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Pin flat_object behaviour difference between composite and internal engines
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Keep flat_object searchable in Lucene on a composite index
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Correct FlatObjectEngineParityIT class docs to match current behaviour
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Commits on Aug 18, 2026
Support index:false on flat_object, scoped to pluggable data formats
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Reconstruct flat_object into _source from the Parquet MAP column
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