[LOG4J2-2773] Configuration file loading ignored on jar-with-dependencies with java 11

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.12.1, 2.13.0
• Component/s: Configurators

Environment

openjdk version 11.0.6; Apache Maven 3.6.3; Ubuntu 19.10

• Assignee: Ralph Goers
• Reporter: SkyghiS
• Created: 06/Feb/20 20:30
• Updated: 21/Feb/20 15:43
• Resolved: 21/Feb/20 03:58

Description

Sample project to ease reproduction : https://github.com/skyghis/testLog4j2

 

I try to load configuration from an external file on a fat jar.

I tried to load configuration from multiples methods without success.

I kept two methods on my sample:

if (!Files.isReadable(log4jConfiguration)) {
    throw new IllegalStateException();
}

LOGGER.info("startup");
LOGGER.debug("startup"); // Not logged = OK

// First try to load configuration
Configurator.initialize(null, log4jConfiguration.toString());
LOGGER.debug("with init"); // Should be logged

// Second try to load configuration
// From log4j FAQ : https://logging.apache.org/log4j/2.x/faq.html#reconfig_from_code
final LoggerContext context = (LoggerContext) LogManager.getContext(false);
context.setConfigLocation(log4jConfiguration.toUri());

LOGGER.debug("reconfig from code"); // Should be logged
LOGGER.info("shutdown"); // Should be logged with [OUTER] prefix

 

The code works when running from IDE, but when executed with java -jar the external configuration is not loaded.

Result when running from IDE:

Result when running from jar:

 

I expect to have the configuration file loaded when running my jar file like when running from IDE.

 

Edit: 

 If I compile and execute the same code with java 8, the code works as expected :

So the issue seem specific to Java11.