We are migrating from Solr 3.5 to Solr 4.2. After some performance testing, we found 4.2's memory usage is a lot higher than 3.5. Our 12GM max heap process used to handle the test pretty well with 3.5. while, with 4.2, the same test runs into serious GC half way (20 minutes) into the test.
Anyone knows that something is significantly different from Solr 3.5 in terms of memory usage? We also notice on a slave, IndexeWriter class is actually taking significant portion (around 3GB) of the heap. Why Solr opens a IndexWriter on a slave? Is there a conf I can use to turn it off? I don't remember I saw such heap usage by a similar class in Solr 3.5. -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-4-memory-usage-increase-tp4064066.html Sent from the Solr - User mailing list archive at Nabble.com.
