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https://issues.apache.org/jira/browse/SOLR-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Houston Putman updated SOLR-14728:
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Security: (was: Public)
> Add self join optimization to the TopLevelJoinQuery
> ---------------------------------------------------
>
> Key: SOLR-14728
> URL: https://issues.apache.org/jira/browse/SOLR-14728
> Project: Solr
> Issue Type: New Feature
> Reporter: Joel Bernstein
> Priority: Major
>
> A simple optimization can be put in place to massively improve join
> performance when the TopLevelJoinQuery is performing a self join (same core)
> and the *to* and *from* fields are the same field. In this scenario the top
> level doc values ordinals can be used directly as a filter avoiding the most
> expensive part of the join which is the bytes ref reconciliation between the
> *to* and *from* fields.
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