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https://issues.apache.org/jira/browse/SOLR-17736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18062023#comment-18062023
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Rahul Goswami commented on SOLR-17736:
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Also, the same argument could be made about bug fixes which are made on the
previous supported major version and not available in the first few minor
versions of the current supported major version. Eg: A fix introduced on 8.11.3
wouldn't have been present on the first few minor versions of 9.x releases.
+1 to not holding back features if the back port is not too
tedious/regression-inducing.
> Introduce support for KNN search on nested vector documents
> -----------------------------------------------------------
>
> Key: SOLR-17736
> URL: https://issues.apache.org/jira/browse/SOLR-17736
> Project: Solr
> Issue Type: New Feature
> Components: vector-search
> Affects Versions: 9.8
> Reporter: Alessandro Benedetti
> Assignee: Alessandro Benedetti
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.1
>
> Attachments: SOLR-17736.patch
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> This issue tracks the work of introducing the support for KNN search on
> nested vector documents, surfacing the Lucene implementation in here:
> https://github.com/apache/lucene/pull/12434
> This allows both:
> -KNN retrieval of children, applying parent filters with no denormalisation
> needed
> -KNN retrieval of parents (based on children KNN, children level prefiltering
> and parent level prefiltering)
> It's one way of having multi-valued vectors per field, per document in Solr.
> More will come soon
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