Snapshot Algorithm Assignment Help
Distributed Snapshot Algorithm:
- Assume each process communicates along with an additional process utilizing unidirectional point-to-point channels (i.e. TCP connections)
- Any process may start the algorithm
- Checkpoint local state
- Send marker on each and every outgoing channel
- On receiving a marker
- Checkpoint state if first marker as well as send marker on outgoing channels, saves messages on all other channels until.
- Subsequent marker on a channel: stop saving state for that channel
Distributed Snapshot:
- A process finishes whenever
- It receives a marker on every incoming channel as well as processes all of them
- State: local state plus state of all channels
- Send state in order to initiator
- Any process may initiate snapshot
- Multiple snapshots might be within progress
- Each is separate, as well as every is distinguished through tagging the marker using the initiator ID (as well as sequence number)
- Multiple snapshots might be within progress
Snapshot Algorithm Example:

a) Organization of a process and channels for any distributed snapshot

b) Process Q receives a marker with regard to the first time as well as records it's local state
c) Q records all incoming information
d) Q receives a marker for its incoming channel as well as finishes recording the state from the incoming channel
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