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Fix duplicate hybrid search result subscription #49831

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Fix duplicate hybrid search result subscription #49831

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2ff0709
Fix duplicate hybrid search result subscription
arnabnandy7 Jul 15, 2026
4896c2a
Merge branch 'main' into fix/rrf-index-out-of-bounds
arnabnandy7 Jul 16, 2026
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1 change: 1 addition & 0 deletions sdk/cosmos/azure-cosmos/CHANGELOG.md
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Expand Up @@ -9,6 +9,7 @@
#### Breaking Changes

#### Bugs Fixed
* Fixed an intermittent `IndexOutOfBoundsException` in cross-partition hybrid search queries caused by multiple subscriptions to the coalesced component query results. - See [Issue 49823](https://github.com/Azure/azure-sdk-for-java/issues/49823)
* Unified request-level consistency override behavior across transports: invalid attempts to upgrade the request consistency level above the account default are now silently ignored instead of returning `BadRequest` in some gateway paths. - See PR [49606](https://github.com/Azure/azure-sdk-for-java/pull/49606).
* Fixed `partitionLevelCircuitBreakerCfg` missing from the `clientCfgs` section of `CosmosDiagnostics` when Per-Partition Circuit Breaker is explicitly enabled. - See PR [49734](https://github.com/Azure/azure-sdk-for-java/pull/49734).
* Fixed thin-client (Gateway V2) queries with a prefix (partial) hierarchical partition key returning co-located documents from other logical partitions. - See PR [49688](https://github.com/Azure/azure-sdk-for-java/pull/49688).
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3 changes: 2 additions & 1 deletion ...java/com/azure/cosmos/implementation/query/HybridSearchDocumentQueryExecutionContext.java
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Expand Up @@ -197,7 +197,8 @@ private Flux<HybridSearchQueryResult<Document>> hybridSearch(List<FeedRangeEpkIm
Flux<Document> componentQueryResults = getComponentQueryResults(targetFeedRanges, initialPageSize, collection, rewrittenQueryInfos);

// Coalesce the results on unique _rids, and sort it based on the _rid
Mono<List<HybridSearchQueryResult<Document>>> coalescedAndSortedResults = coalesceAndSortResults(componentQueryResults);
Mono<List<HybridSearchQueryResult<Document>>> coalescedAndSortedResults =
coalesceAndSortResults(componentQueryResults).cache();

// Compose component scores matrix, where each tuple is (score, index)
Mono<List<List<ScoreTuple>>> componentScoresList = retrieveComponentScores(coalescedAndSortedResults, componentWeights);
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