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https://issues.apache.org/jira/browse/SOLR-5478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867821#comment-13867821
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Robert Muir commented on SOLR-5478:
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{quote}
I will save the searcher.getAtomicReader().getSortedDocValues(uniqueKey) as a
member in the index searcher so I don't have to recreate it everytime.
{quote}
You missed the point, its unnecessary to use SlowCompositeWrapper
(getAtomicReader) here. You don't need a top-level docvalues, and you dont need
a complicated cache or any of that either.
You just need to use docvalues per-segment. I really recommend starting simple
here with just that.
> 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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