[jira] [Created] (LOG4J2-1094) Multi thread initialization problem

["Luca Burgazzoli (JIRA)" <ji...@apache.org>]

Luca Burgazzoli created LOG4J2-1094:
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             Summary: Multi thread initialization problem
                 Key: LOG4J2-1094
                 URL: https://issues.apache.org/jira/browse/LOG4J2-1094
             Project: Log4j 2
          Issue Type: Bug
    Affects Versions: 2.3
            Reporter: Luca Burgazzoli


I wrote a very simple example which has a behaviour I do not expect:

If I call LogManager.getLogger(..) from two threads, only one of the loggers logs what I'd expect but if I add an additional call to LogManager.getLogger(..) before the threads are started, I see what I'd expect so it looks like there is a problem in multi threaded initialization.

You can fine the code and the configuration here:

- https://github.com/lburgazzoli/lb-chronicle/blob/master/chronicle-examples/chronicle-logger-log4j2/src/main/java/com.github.lburgazzoli.openhft.examples.chronicle.logger.log4j2/MtLogging.java
- https://github.com/lburgazzoli/lb-chronicle/blob/master/chronicle-examples/chronicle-logger-log4j2/src/main/resources/log4j2.xml

The code above will show:

{noformat}
    write thread-1
    done thread-1 
    write thread-2
    [TEST] [INFO ] thread-2 - message
    done thread-2
{noformat}

Any call to LogManager makes it succeed:

{code}
    LogManager.getContext(false);
    th1.start();
    th2.start();
    th1.join();
    th2.join();
{code}

New output:

{noformat}
    write thread-2
    write thread-1
    [TEST] [INFO ] thread-2 - message
   done thread-2
   [TEST] [INFO ] thread-1 - message
   done thread-1
{noformat}

The funny thing is that the first thread to arrive is initialized with ERROR level instead of the ALL that is given to root. In other words it seems that the config has not loaded




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