This is the last logging related fix that I'd like to propose adding to 1.10.0 release branch.
Spring Boot adds Logback and log4j-to-slf4j to the classpath. This results in ClassCastExceptions if log4j-core is not excluded. This change prevents Geode from using Log4jAgent if Log4j Core is present but not using Log4jProvider. For example, Log4j uses SLF4JProvider instead of Log4jProvider when log4j-to-slf4j is in the classpath. By disabling Log4jAgent when other Log4j Providers are in use, this prevents problems such as ClassCastExceptions when attempting to cast loggers from org.apache.logging.slf4j.SLF4JLogger to org.apache.logging.log4j.core.Logger to get the LoggerConfig or LoggerContext. PR: https://github.com/apache/geode/pull/3892 GEODE-7050: Use Log4jAgent only if Log4j is using Log4jProvider https://issues.apache.org/jira/browse/GEODE-7050 Thanks, Kirk and Aaron
