Hi,
timeouts can mean all and everything. You should try to correlate it to something else that’s happening in your environment to get you closer to pinpointing it:
- GC behavior
- Network traffic and latency peaks
- Unwanted server utilization
Once you’ve ruled out all those three, you should go in and do more profiling to see what’s actually holding them up occasinally. If you see a period of timeouts when you are doing rebalance it could be that your cluster is undersized.
Let me know if you have more infos on your env to help troubleshoot it down.