Since Release 0.5.0 of the Java ECS formatter
enable_log_correlation is working with Java Util Logging as well, provided that SLF4J is on the classpath as a MDC supplier.
Maybe the documentation can be updated to reflect this. Something like this:
enable_log_correlation is set to
true , the agent will add a MDC entry for
transaction.id . Provided that slf4j is on the classpath. See the
enable_log_correlation configuration option for more details.