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https://issues.apache.org/jira/browse/SOLR-8344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16158575#comment-16158575
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Uwe Schindler commented on SOLR-8344:
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I'd always use docValues for the ID field (if available) for the first pass of
a cloud/distributed search. I had a customer with huge stored fields and the
first pass of the distributed search got a major slowdown. Only workaround was
to use single-pass, which had other problems (of course).
So I'd suggest to add the following special case: If first pass of distributed
search AND id field has docvalues => also use docValues.
> Decide default when requested fields are both column and row stored.
> --------------------------------------------------------------------
>
> Key: SOLR-8344
> URL: https://issues.apache.org/jira/browse/SOLR-8344
> Project: Solr
> Issue Type: New Feature
> Reporter: Ishan Chattopadhyaya
> Attachments: SOLR-8344.patch
>
>
> This issue was discussed in the comments at SOLR-8220. Splitting it out to a
> separate issue so that we can have a focused discussion on whether/how to do
> this.
> If a given set of requested fields are all stored and have docValues (column
> stored), we can retrieve the values from either place. What should the
> default be?
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