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https://issues.apache.org/jira/browse/SOLR-17985?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-17985:
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Labels: pull-request-available (was: )
> Make rows=0 queries fast again
> ------------------------------
>
> Key: SOLR-17985
> URL: https://issues.apache.org/jira/browse/SOLR-17985
> Project: Solr
> Issue Type: Bug
> Affects Versions: 9.9
> Reporter: Houston Putman
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> SOLR-17732 improved score returning for distributed requests, but
> unfortunately it also slowed down queries that fetch no documents. This is
> because it added the {{score}} "field" to fl whenever the sort spec needed it
> (including when no sort was provided), because the distributed merge logic
> would need the value. However when zero docs are requested, there is no
> distributed merging to be done. So we are asking for scores, which make the
> search scan all documents to generate scores even though we don't need any.
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