Hi Simon, I got no experiences with a distributed environment. However, what you are talking about reminds me on another post on the mailing list.
Could it be possible that your slaves not finished their replicating until the new replication-process starts? If so, there you got the OOM :). Just a thought, perhaps it helps. Regards, Em -- View this message in context: http://lucene.472066.n3.nabble.com/Possible-Memory-Leaks-Upgrading-to-a-Later-Version-of-Solr-or-Lucene-tp2321777p2321959.html Sent from the Solr - User mailing list archive at Nabble.com.