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From Frank Wißmann (JIRA) <j...@apache.org>
Subject [jira] [Created] (LOG4J2-774) NdcPatternConverter brakes Log4j 1.2.x layout
Date Wed, 13 Aug 2014 09:35:12 GMT
Frank Wißmann created LOG4J2-774:

             Summary: NdcPatternConverter brakes Log4j 1.2.x layout
                 Key: LOG4J2-774
                 URL: https://issues.apache.org/jira/browse/LOG4J2-774
             Project: Log4j 2
          Issue Type: Bug
          Components: Layouts
    Affects Versions: 2.0.1
            Reporter: Frank Wißmann
            Priority: Minor
             Fix For: 2.0.2

In Log4j 1.2.17 NdcPatternConverter.format() returns an empty string "" or the stack messages
separated by space "a b c" (NDC.DiagnosticContext.fullMessage).
The PatternLayout \[%20.20x\] results in {{\[                    \]}} or {{\[            
  a b c\]}}.

In Log4j 2.0.1 NdcPatternConverter.format() returns an unmodified Collection.toString() representation:
"\[\]" for an empty collection or the collection separated by comma "\[a, b, c\]" (DefaultThreadContextStack.toString()
and MutableThreadContextStack.toString()).
The PatternLayout \[%20.20x\] results in {{\[                  \[\]\]}} or {{\[          
\[a, b, c\]\]}}.

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