title: Hazelcast logging doesn't work
body: <p>We followed all the posts and documentation out there but can't get any <code>DEBUG</code> statements generated by Hazelcast.
  Hazelcast v.3.4.1  Tomcat 7 application server. Slf4j v.1.7.5
  Hazelcast config:</p>
  
  <pre><code>&lt;properties&gt;
      &lt;property name="hazelcast.logging.type"&gt;slf4j&lt;/property&gt;    
    &lt;/properties&gt;
  </code></pre>
  
  <p>Logback.xml
  EDIT: Here is a full logback.xml</p>
  
  <pre><code>&lt;configuration scan="true"&gt;
  &lt;appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"&gt;
      &lt;encoder&gt;
          &lt;pattern&gt;%d{HH:mm:ss.SSS} %-5level %logger{0} - [%X{sessionID}] -   [%X{loginID}] -  %msg%n&lt;/pattern&gt;
      &lt;/encoder&gt;
  &lt;/appender&gt;
  
  &lt;appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"&gt;
      &lt;file&gt;${catalina.base}/logs/app.log&lt;/file&gt;
      &lt;rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"&gt;
          &lt;fileNamePattern&gt;${catalina.base}/logs/app.%d{yyyy-MM-dd}.log&lt;/fileNamePattern&gt;
          &lt;maxHistory&gt;2&lt;/maxHistory&gt;
      &lt;/rollingPolicy&gt;
      &lt;encoder&gt;
          &lt;pattern&gt;%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %logger -  [%X{sessionID}] - [%X{loginID}] - %msg%n&lt;/pattern&gt;
      &lt;/encoder&gt;
  &lt;/appender&gt; 
  
  &lt;logger name="org.mybatis" level="debug" additivity="false"&gt;
      &lt;appender-ref ref="FILE" /&gt;
  &lt;/logger&gt;  
  
  &lt;logger name="com.hazelcast" level="debug" additivity="false"&gt;
          &lt;appender-ref ref="FILE" /&gt;
  &lt;/logger&gt;
  
  &lt;root level="warn"&gt;
      &lt;appender-ref ref="FILE" /&gt;
  &lt;/root&gt;
  </code></pre>
  
  <p></p>
  
  <p>Seems like something else is needed.  No hazelcast logging is visible.
  I would appreciate some help.</p>