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- Simple to implement
- No coordination needed.
- Minimal changes to the current controller/server FSMs used in the LLC segment protocols: some noticeable changes would be in the controller FSM – the Committer Uploading state now becomes obsolete for obvious reason and should be generalized to a state which reflects the segment is being persisted.
Cons:
- If the only server that saves a copy of this segment is destroyed and at the same time the other replicas are unable to catch up, then we may completely lose this segment. In this case, we need to do a segment recovery (either from Kafka or from an offline source).
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