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From "Boris Morris (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (WW-4058) CLONE - XWork ContainerImpl causes ThreadLocal memory leak
Date Tue, 23 Apr 2013 11:27:16 GMT

    [ https://issues.apache.org/jira/browse/WW-4058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13638966#comment-13638966
] 

Boris Morris commented on WW-4058:
----------------------------------

I am using Struts 2.3.14 and Tomcat 7.0.39 and am getting this issue:

2013-04-23 12:00:31,082 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,083 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,101 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,101 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,101 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,101 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,102 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,102 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,103 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,103 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,103 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
2013-04-23 12:00:31,103 [request-worker-4] ERROR org.apache.catalina.loader.WebappClassLoader-
The web application [/dev] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@7f2283e1]) and a value of type [com.opensymphony.xwork2.inject.ContainerImpl]
(value [com.opensymphony.xwork2.inject.ContainerImpl@330069fc]) but failed to remove it when
the web application was stopped. Threads are going to be renewed over time to try and avoid
a probable memory leak.
                
> CLONE - XWork ContainerImpl causes ThreadLocal memory leak
> ----------------------------------------------------------
>
>                 Key: WW-4058
>                 URL: https://issues.apache.org/jira/browse/WW-4058
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Actions
>    Affects Versions: 2.3.1.2
>            Reporter: Boris Morris
>            Assignee: Rene Gielen
>             Fix For: 2.3.3
>
>
> The localContext ThreadLocal is not cleaned up properly when stopping / undeploying /
redeploying a S2 application. This will in most cases cause the web application ClassLoader
not to be garbage collected, thus leaving a redeployment memory leak.

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