[infinispan-issues] [JBoss JIRA] Updated: (ISPN-220) Test suite has memory leaks

Wed Oct 7 17:38:19 EDT 2009

     [ https://jira.jboss.org/jira/browse/ISPN-220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Blagojevic updated ISPN-220:
-------------------------------------

    Attachment: biggest_leakers.zip


Shows tests that are leaking (the worst offenders when the snapshot was taken)

> Test suite has memory leaks
> ---------------------------
>
>                 Key: ISPN-220
>                 URL: https://jira.jboss.org/jira/browse/ISPN-220
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 4.0.0.BETA2
>            Reporter: Vladimir Blagojevic
>            Assignee: Vladimir Blagojevic
>             Fix For: 4.0.0.CR1
>
>         Attachments: biggest_leakers.zip, infinispan_leak.zip
>
>
> TestNG during an execution of a test suite keeps references to all executed test class instances. Our test classes in some cases keep references to instantiated caches thus preventing cache instances from ever being garbage collected. 
> Our test classes should never keep references to cache instances other than in a test method scope. If truly there is a need to keep reference to a cache in a class scope these references should be cleared and nulled in a method annotated with @AfterClass. Of course, the same applies to any objects in class scope (cache managers etc etc.)
> Since TestNG does not traverse class hierarchy for invocation of @AfterClass annotated methods a special care has to be taken that every @AfterClass method is invoked in test class hierarchy (i.e call super).  

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