Shawn, thanks for the reply Please take a look at that post. It's describing the same issue with ES
They describe the issue as "dentry cache is bloating memory" https://discuss.elastic.co/t/memory-usage-of-the-machine-with-es-is-continuously-increasing/23537/5 Thanks Gilad -- View this message in context: http://lucene.472066.n3.nabble.com/High-increasing-slab-memory-solr-6-tp4309708p4309713.html Sent from the Solr - User mailing list archive at Nabble.com.