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https://issues.apache.org/jira/browse/SOLR-12697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17340684#comment-17340684
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Tobias Kässmann commented on SOLR-12697:
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Hello [~erickerickson] and [~slivotov], we're now also in the situation that we
don't want to switch all fields to stored, to use them in our LTR feature
calculation.
Do you need here any assistance / further work on this patch? We can block some
time to out on this.
If the current solution is not that fast, maybe we can use a method like the
one from the
[CollapseQParser.getTopFieldCacheReader|https://github.com/apache/solr/blob/main/solr/core/src/java/org/apache/solr/search/CollapsingQParserPlugin.java#L476]
to get the values?!
> pure DocValues support for FieldValueFeature
> --------------------------------------------
>
> Key: SOLR-12697
> URL: https://issues.apache.org/jira/browse/SOLR-12697
> Project: Solr
> Issue Type: Sub-task
> Components: contrib - LTR
> Reporter: Stanislav Livotov
> Priority: Major
> Attachments: SOLR-12697.patch, SOLR-12697.patch, SOLR-12697.patch,
> SOLR-12697.patch, SOLR-12697.patch
>
>
> [~slivotov] wrote in SOLR-12688:
> bq. ... FieldValueFeature doesn't support pure DocValues fields (Stored
> false). Please also note that for fields which are both stored and DocValues
> it is working not optimal because it is extracting just one field from the
> stored document. DocValues are obviously faster for such usecases. ...
> (Please see SOLR-12688 description for overall context and analysis results.)
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