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From "Lukasz Lenart (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (WW-4361) Memory Leak Issue
Date Thu, 12 Jun 2014 14:41:01 GMT

    [ https://issues.apache.org/jira/browse/WW-4361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029212#comment-14029212
] 

Lukasz Lenart commented on WW-4361:
-----------------------------------

Depends from what version do you migrate

> Memory Leak Issue
> -----------------
>
>                 Key: WW-4361
>                 URL: https://issues.apache.org/jira/browse/WW-4361
>             Project: Struts 2
>          Issue Type: Bug
>         Environment: Struts 2, Hibernate
>            Reporter: MOHAMED IRFANULLA
>
> When I was stopping the Tomcat 7 server I got the below Errors in my Log. Please find
the my web.xml file and Error Logs.
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> 	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
> 	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
> 	id="WebApp_ID" version="3.0">
> 	<display-name>APSRTC</display-name>
> 	<filter>
> 		<filter-name>struts2</filter-name>
> 		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
> 	</filter>
> 	<filter-mapping>
> 		<filter-name>struts2</filter-name>
> 		<url-pattern>/*</url-pattern>
> 	</filter-mapping>
> 	<welcome-file-list>
> 		<welcome-file>index.jsp</welcome-file>
> 	</welcome-file-list>
> </web-app>
> {code}
> Error Log
> -------------
> {noformat}
> SEVERE: The web application [/MyApplication] registered the JDBC driver [oracle.jdbc.driver.OracleDriver]
but failed to unregister it when the web application was stopped. To prevent a memory leak,
the JDBC Driver has been forcibly unregistered.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
> SEVERE: The web application [/MyApplication] registered the JDBC driver [org.postgresql.Driver]
but failed to unregister it when the web application was stopped. To prevent a memory leak,
the JDBC Driver has been forcibly unregistered.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [Timer-0]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [Timer-1]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
> SEVERE: The web application [/MyApplication] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2]
but has failed to stop it. This is very likely to create a memory leak.
> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@7d10065b]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@27118082]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@6e0bead7]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@506701b2]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@1aa0765b]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@1cba5e05]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@f72a8ff]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@30b50545]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@3c6d0dfe]) 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.

> Jun 12, 2014 7:47:33 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
> SEVERE: The web application [/MyApplication] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10]
(value [com.opensymphony.xwork2.inject.ContainerImpl$10@5e6dd64b]) and a value of type [java.lang.Object[]]
(value [[Ljava.lang.Object;@1bb1bdb0]) 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.

> {noformat}



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