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https://issues.apache.org/jira/browse/SOLR-5478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13870151#comment-13870151
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David Smiley commented on SOLR-5478:
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Go fig; I implemented this issue for someone a few months ago. I got
permission to open-source it but haven't had the time to see the issue through
to completion; it touched a bunch of things. It's also more general beyond the
uniqueKey; if *all* fields desired in "fl" are available in DocValues, then
only DocValues are used -- no stored field lookup. I should post it. I didn't
have to muck with the response writer either, if I recall.
> Speed-up distributed search with high rows param or deep paging by
> transforming docId's to uniqueKey via memory docValues
> -------------------------------------------------------------------------------------------------------------------------
>
> 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: 4.7
>
> Attachments: SOLR-5478.patch, SOLR-5478.patch
>
>
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