[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-517) ThreadLocal in ContextHolder causes memory leak when deployed in a web container

[Emmanuel Bernard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=36777#action_36777 ] 

Emmanuel Bernard commented on HSEARCH-517:
------------------------------------------

We can't for 3.2 as people using hbm.xml files and core do still need to manually add these listeners and there are some out there.
But with Hibernate Core 3.6 and annotations merge with Core we will be able to apply the event registration logic to all systems.

We should make it clearer in t he doc that it's a bad idea though.

> ThreadLocal in ContextHolder causes memory leak when deployed in a web container
> --------------------------------------------------------------------------------
>
>                 Key: HSEARCH-517
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-517
>             Project: Hibernate Search
>          Issue Type: Bug
>          Components: engine
>    Affects Versions: 3.0.0.GA, 3.0.1.GA, 3.1.0.Beta1, 3.1.0.Beta2, 3.1.0.CR1, 3.1.0.GA, 3.1.1.GA, 3.2.0.Beta1, 3.2.0.CR1
>         Environment: Hibernate 3.4.0.GA/3.5.1-Final, Tomcat 6.0.26, Spring 2.5.6/3.0.1, Sun JDK 1.6; Hibernate 3.3.1.GA Tomcat 6.0.18 Spring 2.5.6 Java OpenJDK 1.6
>            Reporter: Vojtěch Krása
>            Assignee: Emmanuel Bernard
>            Priority: Critical
>             Fix For: 3.2.0
>
>         Attachments: dump.zip, testCase.zip
>
>
> The SearchFactory has a static ThreadLocal variables which holds a reference to the SearchFactoryImpl. The ThreadLocal is not cleared when the application is undeployed, causing a memory leak.
> http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-314

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