This is actually a logging regression issue, that was introduced in CDH5.7.0, but fixed in CDH5.7.1, and the messages are benign, but can fill up the logs quickly. The recommendation would be to upgrade to CDH5.7.1 or higher where this logging regression was fixed. Alternatively, you can suppress these INFO messages by adding the following to the"Solr Server Logging Advanced Configuration Snippet (Safety Valve) ": log4j.logger.org.apache.solr.servlet.SolrDispatchFilter=WARN -pd ... View more