[jira] [Commented] (LOG4J2-1583) Nested logging call disrupts output of outer logging call

["Mikael Ståldal (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15493286#comment-15493286 ] 

Mikael Ståldal commented on LOG4J2-1583:
----------------------------------------

Are you sure that this problem existed in 2.5? In that case it cannot be due to {{ReusableParameterizedMessage}} since that was introduced in 2.6.

> Nested logging call disrupts output of outer logging call
> ---------------------------------------------------------
>
>                 Key: LOG4J2-1583
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1583
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.5, 2.6, 2.6.2
>         Environment: JVM 1.8.0_102, MacOS 10.11.6
>            Reporter: Larry West
>         Attachments: LOG4J-1583.tbz2, Log4j2ProblemDemo.java, log4j2.xml, pom.xml
>
>
> If a call to logger.info() invokes the toString() method on one of its parameters, and that toString() method invokes another method which has another, nested logging call, then the output of the outer call is mangled.
> This can be quite confusing as the nested logging may be conditional, or at DEBUG level, etc.
> Problem _appears_ to be related to ReusableParameterizedMessage.swapMessage() and the values in indices[].  (It looks inherently non-reentrant.)



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