Hi yriveiro, I am using Solr version3.6.
My cache config is below : <filterCache class="solr.FastLRUCache" size="131072" initialSize="4096" autowarmCount="2048" cleanupThread="true"/> <queryResultCache class="solr.FastLRUCache" size="131072" initialSize="4096" autowarmCount="2048" cleanupThread="true"/> <documentCache class="solr.FastLRUCache" size="131072" initialSize="4096" autowarmCount="2048" cleanupThread="true"/> -- View this message in context: http://lucene.472066.n3.nabble.com/Heap-space-problem-with-mlt-query-tp4068278p4068282.html Sent from the Solr - User mailing list archive at Nabble.com.