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https://issues.apache.org/jira/browse/LUCENE-7311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312002#comment-15312002
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Adrien Grand commented on LUCENE-7311:
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+1 the patch was a bit trappy to write so I agree we should look at simplifying
things first
> TermWeight shoud seek terms lazily
> ----------------------------------
>
> Key: LUCENE-7311
> URL: https://issues.apache.org/jira/browse/LUCENE-7311
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-7311.patch
>
>
> Currently the terms are seeked eagerly in TermQuery.createWeight when
> creating the TermContext. This might be wasteful when scores are not needed
> since the query might be cached on some segments, thus seeking the term on
> these segments is not needed. We could change TermWeight to only seek terms
> in Weight.scorer when scores are not needed.
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