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https://issues.apache.org/jira/browse/LANG-586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829783#action_12829783
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Matt Benson commented on LANG-586:
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As it happens I'm currently working on similar issues at $work and just removed
a ThreadLocal from the [flatfile] component; I'll take a look.
> Use of ThreadLocal in ToStringStyle.java triggers memory leak in container
> environment
> --------------------------------------------------------------------------------------
>
> Key: LANG-586
> URL: https://issues.apache.org/jira/browse/LANG-586
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.builder.*
> Reporter: Mark Thomas
>
> The thread local in org.apache.commons.lang3.builder.ToStringStyle is created
> but never removed and no API is provided to remove it. If a webapp's use of
> LANG triggers the loading of this class, a reference chain will be created
> that will cause a memory leak on web application reload.
> See http://markmail.org/thread/uetw2fdrsqgbh2cv for more info.
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