Github user rgoers commented on the issue:
https://github.com/apache/logging-log4j2/pull/91
After a bunch of interesting reading it appears that ES2015 says that
Object property names are to be ordered in the following way: integer-like
Strings in ascending order, non-integer-like Strings in creation order, Symbols
in creation order.
Since Log4j doesn't use integer-like Strings as property names we can
reasonably expect our JSON to be in the order it was specified (which is
exactly what we get with Jackson).
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
