[jira] [Updated] (SOLR-10059) In SolrCloud, every fq added via is computed twice.

["Torsten Bøgh Köster (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-10059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Torsten Bøgh Köster updated SOLR-10059:
---------------------------------------
    Attachment: SOLR-10059_7x.patch

> In SolrCloud, every fq added via <lst name="appends"> is computed twice.
> ------------------------------------------------------------------------
>
>                 Key: SOLR-10059
>                 URL: https://issues.apache.org/jira/browse/SOLR-10059
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 6.4
>            Reporter: Marc Morissette
>            Priority: Major
>              Labels: performance
>         Attachments: SOLR-10059_7x.patch
>
>
> While researching another issue, I noticed that parameters appended to a query via SearchHandler's <lst name="appends"> are added to the query twice in SolrCloud: once on the aggregator and again on the shard.
> The FacetComponent corrects this automatically by removing duplicates. Field queries added in this fashion are however computed twice and that hinders performance on filter queries that aren't simple bitsets such as those produced by the CollapsingQueryParser.
> To reproduce the issue, simply test this handler on a large enough collection, then replace "appends" with "defaults". You'll notice significant performance improvements.
> {code}
> <requestHandler name="/myHandler" class="solr.SearchHandler">
>     <lst name="appends">
>         <str name="fq">{!collapse field=routingKey hint=top_fc}</str>
>     </lst>
> </requestHandler>
> {code}



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