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List:       xmlbeans-dev
Subject:    [jira] [Commented] (XMLBEANS-502) Usage of XmlBeans triggers "clearThreadLocalMap" warnings in Tomca
From:       "Rick Oosterholt (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date:       2014-08-27 9:36:58
Message-ID: JIRA.12655084.1372318049006.22467.1409132218542 () arcas
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Rick Oosterholt commented on XMLBEANS-502:
------------------------------------------

This issue is still there. 
Has someone found a solution? Why is this not fixed?

> Usage of XmlBeans triggers "clearThreadLocalMap" warnings in Tomcat with XSSF
> -----------------------------------------------------------------------------
> 
> Key: XMLBEANS-502
> URL: https://issues.apache.org/jira/browse/XMLBEANS-502
> Project: XMLBeans
> Issue Type: Bug
> Affects Versions:  Version 2.3
> Environment: Apache Tomcat 6.0.35, Apache POI 3.9-20121203, Java SE 6/7, any \
>                 operating system
> Reporter: Christopher Brown
> Attachments: leak1.png, leak2.png
> 
> 
> Hello,
> After creating this issue https://issues.apache.org/bugzilla/show_bug.cgi?id=55149 \
> I was advised to create the issue here.  This appears to be similar to \
> https://issues.apache.org/jira/browse/XMLBEANS-103 but as it's marked as FIXED and \
> as I'm using a more recent version (and as it's not completely identical), I'm \
> creating a new issue. It would appear that XMLBeans is creating (and not clearing) \
> ThreadLocal variables.  This causes Tomcat to complain about classloader leaks (see \
> messages below).  Based on information in XMLBEANS-103, I have tried to coax the \
> JVM to clear the ThreadLocal (by performing garbage collection on the JVM), but \
> that doesn't clear the ThreadLocals, even if allowing time to elapse AFTER using \
> POI to process an XSSF document and BEFORE stopping Tomcat. To workaround this, \
> we're having to impose long downtime when a restart is required.  Perhaps a utility \
> class within XMLBeans could be made available with the POI distribution such as: \
>                 XMLBeansCache.clearThreadLocals()
> ...that I could call from a "finally" block after processing the XSSF document?
> Here's the information from Tomcat's logs:
> SEVERE: The web application [/foobar] created a ThreadLocal with key of type \
> [org.apache.xmlbeans.XmlBeans$1] (value [org.apache.xmlbeans.XmlBeans$1@7d3aace]) \
> and a value of type [java.lang.ref.SoftReference] (value \
> [java.lang.ref.SoftReference@5972be65]) but failed to remove it when the web \
> application was stopped. This is very likely to create a memory leak. Jun 26, 2013 \
>                 7:01:56 PM org.apache.catalina.loader.WebappClassLoader \
>                 clearThreadLocalMap
> SEVERE: The web application [/foobar] created a ThreadLocal with key of type \
> [org.apache.xmlbeans.impl.schema.SchemaTypeLoaderImpl$1] (value \
> [org.apache.xmlbeans.impl.schema.SchemaTypeLoaderImpl$1@7c3206c3]) and a value of \
> type [java.util.ArrayList] (value [[java.lang.ref.SoftReference@385a2be8]]) but \
> failed to remove it when the web application was stopped. This is very likely to \
> create a memory leak. Jun 26, 2013 7:01:56 PM \
>                 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
> SEVERE: The web application [/foobar] created a ThreadLocal with key of type \
> [org.apache.xmlbeans.impl.store.Locale$1] (value \
> [org.apache.xmlbeans.impl.store.Locale$1@27f8a93f]) and a value of type \
> [java.lang.ref.SoftReference] (value [java.lang.ref.SoftReference@362f7b99]) but \
> failed to remove it when the web application was stopped. This is very likely to \
> create a memory leak. Jun 26, 2013 7:01:56 PM \
>                 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
> SEVERE: The web application [/foobar] created a ThreadLocal with key of type \
> [org.apache.xmlbeans.impl.store.CharUtil$1] (value \
> [org.apache.xmlbeans.impl.store.CharUtil$1@675b9599]) and a value of type \
> [java.lang.ref.SoftReference] (value [java.lang.ref.SoftReference@2dbaa4d2]) but \
> failed to remove it when the web application was stopped. This is very likely to \
> create a memory leak.



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