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https://issues.apache.org/jira/browse/SOLR-5478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley closed SOLR-5478.
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Resolution: Duplicate
> Optimization: Fetch all "fl" values from docValues instead of stored values
> if possible/equivalent
> --------------------------------------------------------------------------------------------------
>
> Key: SOLR-5478
> URL: https://issues.apache.org/jira/browse/SOLR-5478
> Project: Solr
> Issue Type: Improvement
> Components: Response Writers
> Affects Versions: 4.5
> Reporter: Manuel Lenormand
> Fix For: 6.0, 4.9
>
> Attachments: SOLR-5478.patch, SOLR-5478.patch, SOLR-5478 smiley
> fl.fieldCacheFields.patch
>
>
> When the "fl" field list mentions a list of fields that all have docValues,
> and they are equivalent to the stored version (not true for multiValued field
> due to ordering), then we can fetch the values more efficiently from
> docValues than from stored values. If this can't be done, might as well
> fetch them all from stored values when they have both (this is what happens
> today).
> Former title: Speed-up distributed search with high rows param or deep paging
> by transforming docId's to uniqueKey via memory docValues
> Originally the scope of this was just for the uniqueKey but now it's broader.
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