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https://issues.apache.org/jira/browse/LOG4J2-1033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14564986#comment-14564986
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Mikael Ståldal commented on LOG4J2-1033:
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Now when this is fixed, what is the actual purpose for
ThreadContextMap.getCopy() and ThreadContext.getContext()?
It seems like the only usage is in org.apache.logging.slf4j.Log4jMDCAdapter.
> SimpleLogger creates unnecessary Map objects by calling
> ThreadContext.getContext() instead of getImmutableContext()
> --------------------------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-1033
> URL: https://issues.apache.org/jira/browse/LOG4J2-1033
> Project: Log4j 2
> Issue Type: Bug
> Components: API
> Affects Versions: 2.3
> Environment: Apache Maven 3.2.5
> (12a6b3acb947671f09b81f49094c53f426d8cea1; 2014-12-14T09:29:23-08:00)
> Maven home: C:\Java\apache-maven-3.2.5
> Java version: 1.7.0_79, vendor: Oracle Corporation
> Java home: C:\Program Files\Java\jdk1.7.0_79\jre
> Default locale: en_US, platform encoding: Cp1252
> OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
> Reporter: Gary Gregory
> Fix For: 2.4
>
>
> SimpleLogger creates unnecessary Map objects by calling
> ThreadContext.getContext() instead of getImmutableContext() each time
> logMessage is called and 'show context map' is enabled.
> Reported on the ML by Mikael Ståldal.
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