Sonu Sharma created SOLR-18195:
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Summary: Support for Collapse Results in Combined Query Component
Key: SOLR-18195
URL: https://issues.apache.org/jira/browse/SOLR-18195
Project: Solr
Issue Type: Improvement
Components: vector-search
Reporter: Sonu Sharma
With reference to previous new Query Component Feature:
https://issues.apache.org/jira/browse/SOLR-17319
When using \{!collapse} with CombinedQueryComponent (hybrid search / RRF),
duplicate documents appear in the result set for the same collapse field value.
Each sub-query independently collapses correctly via CollapsingPostFilter, but
simpleCombine() merges results by Lucene doc ID only - it has no awareness of
the collapse field. Different sub-queries may select different group heads for
the same field value, and both survive the merge.
However it is well know limitation that :[ "In order to use these features with
SolrCloud, the documents must be located on the same
shard."|https://solr.apache.org/guide/solr/latest/query-guide/collapse-and-expand-results.html]
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