This project provides a Solr LogWatcher implementation that works with the Log4J 2 API.
To use this project, you need to build it using (mvn clean package) and then copy the resulting JAR file
to the lib directory of your Solr home, such as solr-5.2.1/server/solr/lib. In addition, you need to
update the solr.xml file to use this implementation by adding the following XML snippet:
<logging>
<str name="enabled">true</str>
<str name="class">org.apache.solr.logging.log4j2.Log4j2Watcher</str>
<watcher>
<int name="size">100</int>
<str name="threshold">INFO</str>
</watcher>
</logging>