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https://issues.apache.org/jira/browse/LOG4J2-1368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Remko Popma reassigned LOG4J2-1368:
-----------------------------------
Assignee: Remko Popma
> Status logger drops/ignores exception
> -------------------------------------
>
> Key: LOG4J2-1368
> URL: https://issues.apache.org/jira/browse/LOG4J2-1368
> Project: Log4j 2
> Issue Type: Bug
> Components: API
> Affects Versions: 2.5
> Reporter: Remko Popma
> Assignee: Remko Popma
>
> Internal log4j logging like below will just log the message but will not
> report the specified exception:
> {code}
> try {
> someProcess();
> } catch (Exception exception) {
> StatusLogger.getLogger().warn("error occurred during {}", "some process",
> exception);
> }
> {code}
> This is caused by a bug in ParameterizedNoReferenceMessageFactory (the
> factory used by StatusLogger):
> {code}
> final String formatted = new ParameterizedMessage(message,
> params).getFormattedMessage();
> return new SimpleMessage(formatted); // exception is dropped
> {code}
> This factory was introduced to resolve memory leaks that appeared in web
> containers because StatusLogger keeps a ring buffer of previously logged
> messages and ParameterizedMessage keeps a reference to its parameter objects
> (LOG4J2-1176).
> AbstractLogger depends on the Message to get the Throwable when logging a
> message with parameters, so SimpleMessage is not good enough. I'm thinking to
> introduce a new class {{StatusMessage}} (perhaps as an inner class of
> ParameterizedNoReferenceMessageFactory in order to keep the API surface
> small). StatusMessage would have the formatted string and the Throwable
> (which may be null). That should solve this issue.
> If the Throwable is a custom Log4j class like AppenderLoggingException then
> keeping a reference to it may re-introduce memory leaks again though, but I
> guess that is a fight for another day...
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