Major Description
Currently, the TracerDriver exposed the latency of ZK operations, in multi-tenant environment, extra metrics are required to help tracing and monitoring:
- the bytes being sent and received, so we can monitor the client usage scenarios.
- which ensemble participant the client is talking to, used to find out the problematic Zk server when the issue happened.
- the z-node path, to easily find out which z-node caused the problem, like high load, etc.
