Off the top of my head, i don't know hte answers to some of your
questions, but as to the core cause of the exception...
: 3. server.query(solrQuery) throws SolrServerException. How can concurrent
: solr queries triggers Too many open file exception?
...bear in mind that (as i understand it) the limit on open files is
actually a limit on open file *descriptors* which includes network
sockets.
a google search for java.net.SocketException: Too many open files will
give you loads of results -- it's not specific to solr.
-Hoss
