title: Is it possible for Solr to load a new log4j.properties configuration file without Solr restart?
body: <p>I use <code>log4j.properties</code> with a Solr 5.2. My Solr is working in the production environment so I do not want to restart it unless it's really necessary. </p>
  
  <p>What I changed:</p>
  
  <pre><code>log4j.appender.file=org.apache.log4j.RollingFileAppender 
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>log4j.appender.APP=path.to.class.CustomRollingFileAppender
  log4j.appender.APP.DatePattern='.'yyyy-MM-dd
  log4j.appender.APP.TimeInterval=1
  </code></pre>
  
  <p>I would like Solr to use the changed <code>log4j.properties</code> file without Solr process restarted.</p>
  
  <p>Is it possible?</p>