Hmmm, on most Linux/UNIX systems, sending the QUIT signal does nothing else but generate a stack trace to the console or a log file. If you don't start tomcat by hand, the stack trace may go somewhere else I suppose. This would be useful to learn how to do on your particular system (and we should add it to a debugging/troubleshooting wiki too).
Okay, I figured out how to get the thread dump. It was in the tomcat logfile. I'm attaching it here.
Are you load-balancing at all, or is this your only search server? FYI, I'm looking into something that will help.
I'm load balancing two solr servers. thanks, Kevin
thread_dump.txt.gz
Description: GNU Zip compressed data
