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Posted to dev@jackrabbit.apache.org by "Julian Reschke (Jira)" <ji...@apache.org> on 2020/08/24 13:30:00 UTC

[jira] [Updated] (JCR-4541) reduce classpath lookups for SaxParserFactory

     [ https://issues.apache.org/jira/browse/JCR-4541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Reschke updated JCR-4541:
--------------------------------
    Fix Version/s: 2.16.7

> reduce classpath lookups for SaxParserFactory
> ---------------------------------------------
>
>                 Key: JCR-4541
>                 URL: https://issues.apache.org/jira/browse/JCR-4541
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: jackrabbit-jcr-commons, jackrabbit-jcr2spi
>            Reporter: Lars Grefer
>            Assignee: Julian Reschke
>            Priority: Major
>              Labels: candidate_jcr_2_16, performance
>             Fix For: 2.20.1, 2.22, 2.21.1, 2.18.6, 2.16.7
>
>
> While profiling our application, I noticed that {{org.apache.jackrabbit.commons.xml.ParsingContentHandler#parse}} creates a new {{SAXParserFactory}} instance on every invocation.
> This is quite expensive because {{SAXParserFactory.newInstance()}} internally scans the whole classpath for {{META-INF/services/}} declarations.
> I therefore propose this patch: https://github.com/apache/jackrabbit/pull/90



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