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Posted to dev@lucene.apache.org by "Cao Manh Dat (JIRA)" <ji...@apache.org> on 2017/09/19 02:13:00 UTC
[jira] [Comment Edited] (SOLR-5478) Optimization: Fetch all "fl"
values from docValues instead of stored values if possible/equivalent
[ https://issues.apache.org/jira/browse/SOLR-5478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16171004#comment-16171004 ]
Cao Manh Dat edited comment on SOLR-5478 at 9/19/17 2:12 AM:
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Hi [~dsmiley] [~varunthacker], I think commit on SOLR-8344 solved this issue as well then this issue can be closed. In case we want to change the optimization algorithm, we can open another ticket with a detailed proposal about the changing.
was (Author: caomanhdat):
Hi [~dsmiley] [~varunthacker], I think commit on SOLR-8344 solved this issue as well. In case we want to change the optimization algorithm, we can open another ticket with a detailed proposal about the changing.
> 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: 4.9, 6.0
>
> 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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