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https://issues.apache.org/jira/browse/SOLR-16758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kira Traynor updated SOLR-16758:
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    Attachment: QueryLatencySolrTest.java

> GraphQuery Performing Slower in Solr 9
> --------------------------------------
>
>                 Key: SOLR-16758
>                 URL: https://issues.apache.org/jira/browse/SOLR-16758
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Kira Traynor
>            Priority: Major
>         Attachments: GraphQuery.patch, QueryLatencySolrTest.java
>
>
> We found that the changes made in SOLR-14185 with the GraphQuery slowed down 
> the performance of the graph join by around 50%. Reverting the changes made 
> in that pr to use a `Filter` object to get the `DocIdSet` rather than using a 
> `DocIdSetIterator`, sped the query times up in our tests to be more similar 
> to what we were seeing with the Solr 8 graph joins.
> The same change was made to the JoinQuery class so possibly slower 
> performance can be found there as well.



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