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https://issues.apache.org/jira/browse/LUCENE-8791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16844029#comment-16844029
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Adrien Grand commented on LUCENE-8791:
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bq. Yes, We run CPU intensive ML models to rescore hits, it always runs with an
executor.
I understand how ML models can be costly to build, but running them against a
small set of hits should perform reasonably fast?
bq. using LeafReaderContext.ord directly as positional parameter might be risky
since LeafReaderContext has a constructor where it sets the ord to 0
This constructor is pkg-private and only used for single-segment reader
contexts, such as the ones that you get from LeafReader#getContext. Reader
context ords should be reliable.
> Add CollectorRescorer
> ---------------------
>
> Key: LUCENE-8791
> URL: https://issues.apache.org/jira/browse/LUCENE-8791
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Elbek Kamoliddinov
> Priority: Major
> Attachments: LUCENE-8791.patch, LUCENE-8791.patch, LUCENE-8791.patch
>
>
> This is another implementation of query rescorer api (LUCENE-5489). It adds
> rescoring functionality based on provided CollectorManager.
>
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