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https://issues.apache.org/jira/browse/LUCENE-7517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15595168#comment-15595168
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Yonik Seeley commented on LUCENE-7517:
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bq. Any opinions about whether things like CachingCollector should keep
buffering floats or switch to doubles if we do that?
Seems like it should switch to doubles (that original caching was meant to be
totally transparent).
> Explore making Scorer.score() return a double
> ---------------------------------------------
>
> Key: LUCENE-7517
> URL: https://issues.apache.org/jira/browse/LUCENE-7517
> Project: Lucene - Core
> Issue Type: Wish
> Reporter: Adrien Grand
> Priority: Minor
>
> Follow-up to
> http://search-lucene.com/m/l6pAi1BoyPJ1vr2382&subj=Re+JENKINS+EA+Lucene+Solr+master+Linux+64bit+jdk+9+ea+140+Build+18103+Unstable+.
> We could make Scorer.score() return a double in order to lose less accuracy
> when combining scores together, while still using floats on TopDocs and more
> generally all parts of the code that need to store scores.
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