See https://issues.apache.org/jira/browse/SOLR-10506 Fixed for 7.0
Markus -----Original message----- > From:Hendrik Haddorp <hendrik.hadd...@gmx.net> > Sent: Monday 28th August 2017 17:42 > To: solr-user@lucene.apache.org > Subject: Solr memory leak > > Hi, > > we noticed that triggering collection reloads on many collections has a > good chance to result in an OOM-Error. To investigate that further I did > a simple test: > - Start solr with a 2GB heap and 1GB Metaspace > - create a trivial collection with a few documents (I used only 2 > fields and 100 documents) > - trigger a collection reload in a loop (I used SolrJ for this) > > Using Solr 6.3 the test started to fail after about 250 loops. Solr 6.6 > worked better but also failed after 1100 loops. > > When looking at the memory usage on the Solr dashboard it looks like the > space left after GC cycles gets less and less. Then Solr gets very slow, > as the JVM is busy with the GC. A bit later Solr gets an OOM-Error. In > my last run this was actually for the Metaspace. So it looks like more > and more heap and metaspace is being used by just constantly reloading a > trivial collection. > > regards, > Hendrik >
