Hello - FieldCache is your problem. This can be solved in many ways but only one really beneficial: decrease number of documents, increase heap, facet on fewer fields, don't do function query on many fields. Or, of course, reindex with doc values. And you get a bonus, you can also drastically reduce your heap size.
----Original message----- > From:Kelly, Frank <frank.ke...@here.com> > Sent: Thursday 9th February 2017 14:20 > To: solr-user@lucene.apache.org > Subject: Solr Heap Dump: Any suggestions on what to look for? > > Got a heap dump on an Out of Memory error. > Analyzing the dump now in Visual VM > > Seeing a lot of byte[] arrays (77% of our 8GB Heap) in > TreeMap$Entry FieldCacheImpl$SortedDocValues > We’re considering switch over to DocValues but would rather be definitive > about the root cause before we experiment with DocValues and require a > reindex of our 200M document index > In each of our 4 data centers. > > Any suggestions on what I should look for in this heap dump to get a > definitive root cause? > > Cheers! > > -Frank > > > Frank Kelly > Principal Software Engineer > HERE > 5 Wayside Rd, Burlington, MA 01803, USA > 42° 29' 7" N 71° 11' 32" W > <http://360.here.com/> > <https://www.twitter.com/here> > <https://www.facebook.com/here> > <https://www.linkedin.com/company/heremaps> > <https://www.instagram.com/here/>
