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Posted to issues@lucene.apache.org by "Joel Bernstein (Jira)" <ji...@apache.org> on 2020/08/11 13:18:00 UTC
[jira] [Updated] (SOLR-14728) Add self join optimization to the
TopLevelJoinQuery
[ https://issues.apache.org/jira/browse/SOLR-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joel Bernstein updated SOLR-14728:
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Description: A simple strategy 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. (was: A simple strategy 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. )
> 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
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Priority: Major
>
> A simple strategy 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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