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https://issues.apache.org/jira/browse/LOG4J2-1500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15410346#comment-15410346
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ASF GitHub Bot commented on LOG4J2-1500:
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Github user asfgit closed the pull request at:
https://github.com/apache/logging-log4j2/pull/37
> Merging configurations fail with an NPE when comparing Nodes with different
> attributes
> --------------------------------------------------------------------------------------
>
> Key: LOG4J2-1500
> URL: https://issues.apache.org/jira/browse/LOG4J2-1500
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.6.2
> Reporter: Jose Leon
> Fix For: 2.7
>
>
> When you pass two configurations and there are different Nodes in the Root
> logger a NPE gets thrown.
> Example stub configuration 1
> {code:xml}
> <Loggers>
> <Root level="...">
> <AppenderRef ref="STDOUT">
> <Property name="hostname">server1</Property>
> </Root>
> </Loggers>
> {code}
> Example stub configuration 2
> {code:xml}
> <Loggers>
> <Root level="...">
> <AppenderRef ref="STDOUT">
> <AppenderRef ref="File">
> </Root>
> </Loggers>
> {code}
> Failure happens because DefaultMergeStrategy.isSameName() and
> isSameReference() calls get() without checking for null.
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