Very interesting links, after much more digging yesterday this appears to be exactly what I'm seeing.
I am using 4.0 beta currently for my testing. FWIW I've also pulled trunk from svn as of yesterday and experienced the same issue. ________________________________________ From: Alexey Serba [ase...@gmail.com] Sent: Wednesday, August 29, 2012 6:45 AM To: solr-user@lucene.apache.org Subject: Re: Injest pauses Hey Brad, > This leads me to believe that a single merge thread is blocking indexing from > occuring. > When this happens our producers, which distribute their updates amongst all > the shards, pile up on this shard and wait. Which version of Solr you are using? Have you tried 4.0 beta? * http://searchhub.org/dev/2011/04/09/solr-dev-diary-solr-and-near-real-time-search/ * https://issues.apache.org/jira/browse/SOLR-2565 Alexey