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https://issues.apache.org/jira/browse/LOG4J2-3471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary D. Gregory resolved LOG4J2-3471.
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Fix Version/s: 2.17.3
Resolution: Fixed
[~rajeshn]
Thank you for your report.
Please try a 2.17.3-SNAPSHOT from
[https://repository.apache.org/content/repositories/snapshots/]
TY!
> log4j-1.2-api 2.17.2 throws NullPointerException while removing appender with
> name as null
> ------------------------------------------------------------------------------------------
>
> Key: LOG4J2-3471
> URL: https://issues.apache.org/jira/browse/LOG4J2-3471
> Project: Log4j 2
> Issue Type: Bug
> Affects Versions: 2.17.2
> Reporter: Rajesh
> Assignee: Gary D. Gregory
> Priority: Major
> Fix For: 2.17.3
>
>
> The log4j 1.2 bridge for 2.17.2 throws null pointer exception while removing
> Null appender
> viz. org.apache.log4j.varia.NullAppender
> The class AppenderAttachableImpl adds the null appender to the
> concurrenthashmap as "null" and on removal there is no check for null and
> removes the nullappender with name null hence the NullPointerexception.
> Caused by: java.lang.NullPointerException
> at java.util.concurrent.ConcurrentHashMap.remove(Unknown Source)
> at
> org.apache.log4j.helpers.AppenderAttachableImpl.removeAppender(AppenderAttachableImpl.java:93)
> at org.apache.log4j.Category.removeAppender(Category.java:618)
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