We have a 12node Cassandra cluster running on 1.2.12. Each node is using 1.1TB out of 2TB. Each node has a min+max heap of 24Gb and the physical server has 48Gb. Our nodes do not restart during the week, only on the weekend, and we're observing that the off heap memory that is consumed ramps up over the course of the week. There were a few occasions lately where it consumed so much, it started swapping and OS eventually killed the process (for good reason).
I know we need to upgrade, but I'd like to evaluate if upgrading will fix the problem. Has anyone experienced this or can anyone provide guidance? Parag
