title: Log4j Multiple Threads
body: <p>I am adding ConsoleAppender to rootlogger for log4j as</p>
  
  <pre><code>BasicConfigurator.configure(new ConsoleAppender(layout, "System.err"));
  </code></pre>
  
  <p>But somehow log messages in some loggers down the hierarchy are not reaching console. I have not seen any instance in the hierarchy setting the additivity flag as false. </p>
  
  <p>Some loggers are running in different threads, do you I need to do any configuration? How can I debug this?</p>