Hi, it seems that this bug was reported earlier:
https://issues.apache.org/jira/browse/LOGCXX-339 And here is copy of Curt Arnold answer to this issue: > That statement was likely copied over verbatim from log4j and then never implemented. I'm guessing it may not be implementable, at least without platform-specific code. Open to implementation suggestions. Unfortunately, you have to copy MDC context to child threads by yourself. -- Krzysztof Bieleń
