[jira] [Created] (GROOVY-8106) Memory leak with expando metaclass in groovy

["Russell Morrisey (JIRA)" <ji...@apache.org>]

Russell Morrisey created GROOVY-8106:
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             Summary: Memory leak with expando metaclass in groovy
                 Key: GROOVY-8106
                 URL: https://issues.apache.org/jira/browse/GROOVY-8106
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 2.4.9, 2.4.4
         Environment: Grails 2.5.1 (with updated Groovy version)
Win 7
Java HotSpot 64 v1.8.0_66-b17
            Reporter: Russell Morrisey
         Attachments: BuildConfig.groovy, groovy mem leak.png

I am seeing a memory leak in my Grails app, which uses a lot of expando metaclass properties.

From looking at the GC path, I believe this leak comes from the Groovy framework. I have attached a screenshot from jvisualvm which shows a path to the GC root. The path doesn't appear to contain any weak/soft reference types.

Please let me know if you think my analysis is mistaken. I don't have a strong understanding of Groovy framework internals.

GC via JMX does not remove these objects.

Updating my BuildConfig to use Groovy 2.4.9 (with forked compile) did not fix the issue.

(Note: Some of the dependencies in the attached BuildConfig are proprietary and not available from the grails plugin repo.)




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