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When 3000 concurrent access hit to the Cassandra, we are facing following issues,
1. 100 CPU utilization
2. OperationTimedOutException- Timed out waiting for server response
3. Cassandra goes down and we need to restart it
How to configure the Cassandra to improve the performance
I'm not sure what your question is but what you have described is by design.
cassandra-stress will stress your cluster until it reaches breaking point. That's what the utility is designed to do. Cheers!
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