I believe that things like the following will affect faceting memory requirements -> how many fields do you facet on -> what is the cardinality of each one of them -> What is you QPS rate
but 2GB for 27M documents seems too low. Did you try to increase the memory on Solr's JVM? -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
