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Posted to dev@lucene.apache.org by "Mikhail Khludnev (JIRA)" <ji...@apache.org> on 2018/10/30 18:01:00 UTC
[jira] [Resolved] (SOLR-12878) FacetFieldProcessorByHashDV is
reconstructing FieldInfos on every instantiation
[ https://issues.apache.org/jira/browse/SOLR-12878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mikhail Khludnev resolved SOLR-12878.
-------------------------------------
Resolution: Fixed
Assignee: Mikhail Khludnev
Fix Version/s: master (8.0)
7.6
> FacetFieldProcessorByHashDV is reconstructing FieldInfos on every instantiation
> -------------------------------------------------------------------------------
>
> Key: SOLR-12878
> URL: https://issues.apache.org/jira/browse/SOLR-12878
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Facet Module
> Affects Versions: 7.5
> Reporter: Tim Underwood
> Assignee: Mikhail Khludnev
> Priority: Major
> Labels: performance
> Fix For: 7.6, master (8.0)
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The FacetFieldProcessorByHashDV constructor is currently calling:
> {noformat}
> FieldInfo fieldInfo = fcontext.searcher.getSlowAtomicReader().getFieldInfos().fieldInfo(sf.getName());
> {noformat}
> Which is reconstructing FieldInfos each time. Simply switching it to:
> {noformat}
> FieldInfo fieldInfo = fcontext.searcher.getFieldInfos().fieldInfo(sf.getName());
> {noformat}
>
> causes it to use the cached version of FieldInfos in the SolrIndexSearcher.
> On my index the FacetFieldProcessorByHashDV is 2-3 times slower than the legacy facets without this fix.
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