I'm experiencing periodic crashes (once or twice per day, no discernable pattern) on the OSS version of ES from the PackageCloud repo on Ubuntu 14.04 LTS on an AWS EC2 t2.micro instance. Low load as it's just staging; I do poll a single stream every second or so, with occasional writes. CPU and memory usage look fine. Happy to provide any other details, not 100% sure what to look for for ES though.
The logs in /var/log/eventstore/<date>/0.0.0.0-2113-cluster-node.log show just the startup log messages, however I found the following at the top of today's upstart log:
[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
at System.Threading.Timer+Scheduler.SchedulerThread () [0x00000] in <filename unknown>:0
at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0
No information as to what is trying to be referenced, and I'm not sure where else to look. Any advice would be appreciated.