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- Custom metrics affect performance and take additional resources.
- There could be race conditions on metric registrations. Metrics with incompatible types can be concurrently registered with the same names.
- We do not expose API of all internal metrics. At least with the first tickets.
- Custom metrics aren't stored and require re-registration after node restart. At least with the first tickets.
API
APIs description
To give an user the ability to register additional metrics, we could either:
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