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We show an example in the attached figure. In the example, we have an ensemble of three bookies and we replicate entries in two bookies. The ledger writer adds successfully up to entry 11 and writes entry 12 partially. The reader initiates recovery by first obtaining the last confirmed add from each bookie, and starts from the next after the latest, which corresponds to entry 12. The reader reads entry 12 and ensures that it is replicated in a quorum by writing back entry 12. The next entry, entry 13, does not exist, since it is not present in any of the bookies that would have it, had it been written. The reader finally declares the ledger closed and writes to the metadata store, using CAS. When the ledger tries to complete the add of entry 12, the bookie rejects the request because it has been fenced.

!fencing-example.png|border=1|size=10 !Image Added