[jira] [Commented] (CAMEL-6452) FileUtil.getDefaultTempDir() causes a classloader leak in webapps

["Willem Jiang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAMEL-6452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13682948#comment-13682948 ] 

Willem Jiang commented on CAMEL-6452:
-------------------------------------

Hi Sanjay,

I just have a quick look of the path, it looks like you add a cleanup to the FileUtil, but I didn't found the place where you call it. 
Can you give us more detail about unload the application?

Willem
                
> FileUtil.getDefaultTempDir() causes a classloader leak in webapps
> -----------------------------------------------------------------
>
>                 Key: CAMEL-6452
>                 URL: https://issues.apache.org/jira/browse/CAMEL-6452
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.10.4
>         Environment: tomcat 7, spring 3.2
>            Reporter: Sanjay Deshmukh
>         Attachments: 0001-Fixed-CAMEL-6452-by-adding-a-cleanup-routine-to-remo.patch
>
>
> FileUtil.getDefaultTempDir() registers a JVM shutdown hook to delete the temporary directory it creates. We are using camel in a web application in Tomcat that gets dynamically reloaded as updates are available, so the JVM is normally never shut down. This is causing 'camel-tmp-*' directories to linger in $CATALINA_HOME/temp, and - more importantly - classloader leaks, which are a major problem for us.
> If the thread that gets registered as the shutdown hook were stored in a class variable, I could unregister it when the application is being unloaded.

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