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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2018/06/05 16:01:00 UTC

[jira] [Updated] (SOLR-12233) QParserPlugin maintains a list of classes recreated every time a Solrcore object is created

     [ https://issues.apache.org/jira/browse/SOLR-12233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley updated SOLR-12233:
--------------------------------
    Attachment: SOLR-12233.patch

> QParserPlugin maintains a list of classes recreated every time a Solrcore object is created
> -------------------------------------------------------------------------------------------
>
>                 Key: SOLR-12233
>                 URL: https://issues.apache.org/jira/browse/SOLR-12233
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 7.1.1
>            Reporter: Jeff Miller
>            Assignee: David Smiley
>            Priority: Minor
>         Attachments: SOLR-12233.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> QParserPlugin maintains a static map of Class Names to Class objects and everytime we create a SolrCore object this causes a lot of overhead doing classloader lookups.  Our system runs a lot of cores and the classloader gets bogged down when a lot of threads are creating solrcore objects.  
> There's no need to create these objects every time, similar classes such as 
> TransformerFactory store the object one time and reference it over and over again



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