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https://issues.apache.org/jira/browse/SOLR-12322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466909#comment-16466909
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Mikhail Khludnev commented on SOLR-12322:
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I don't really understand how [^doc_level_exaplantion.docx] answers my question
(what can't be done with \[subquery]?). If it's returning parents without
children, it can be done with {{fq}} on subquery level. Statements about
termcount still is not clear, how the proposed patch address it?
> Select specific field list for child documents using
> ChildDocTransformerFactory
> -------------------------------------------------------------------------------
>
> Key: SOLR-12322
> URL: https://issues.apache.org/jira/browse/SOLR-12322
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Response Writers, search
> Affects Versions: 6.6
> Reporter: adeppa
> Priority: Minor
> Fix For: 6.6
>
> Attachments: SOLR-12322.patch, doc_level_exaplantion.docx
>
>
> With the current version of SOLR and nested indexing, when you are fetch a
> parent record it returns all the fields of its children. This is increasing
> the size of data being returned from SOLR and also hits our performance
> sometime.
> This ticket will be used to update the ChildDocTransformerFactory class with
> additional parameters to specify the list of fields to be pulled for child
> documents.
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