Hello, I currently have Solr 4.3 set up with about 400 cores set to load upon start up. When starting Solr with an empty index for each core, Solr is able to load all of the cores and start up normally as expected. However, after running a dataimport on all cores and restarting Solr, it hangs at "org.apache.solr.core.CoreContainer; registering core: ..." without any type of error message in the log. The process still exists at this point, but doesn't make any progress even if left for a period of time. Prior to the restart, Solr continues to function normally, and is searchable.
Solr is currently running in master-slave replication, and this same, exact behavior occurs on the master and both slaves. I've checked all of the system log files and am also unable to find any errors or messages that would point to a particular problem. Originally, I had thought it may have been related to an open file limit, but I also tried raising the limit to 65k, and Solr continued to hang at the same spot. It does appear to be related to files to an extent, since removing the index/"data" directory of half of the cores does allow Solr to start up normally. Any help or suggestions are appreciated. Thanks!
