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Setting Solr 4 log4j values

You can set different debug logging levels for Alfresco-Solr 4 components using the Solr 4 log4j properties.
  1. Locate the <solrRootDir>/log4j-solr.properties file.
  2. Edit it to add your required logging setting. For example:

    log4j.logger.org.alfresco.solr.tracker.MetadataTracker=DEBUG
  3. Changes to the log4j-solr.properties file will be re-read by Solr 4 when it starts up. If you need to make changes to the logging level while the system is running, going to the following URL (either in a browser or for example, using curl) will cause Solr 4 to re-load the properties file.

    https://<solrHostName>:<solrPort>/solr4/admin/cores?action=LOG4J&resource=log4j-solr.properties