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gilbertchen
2016-02-23 22:52:51 -05:00
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DESIGN.md
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@@ -59,7 +59,7 @@ The first condition guarantees that if a backup procedure references a chunk bef
The second condition guarantees that any backup procedure unknown to the fossil deletion step can start only after the fossil collection step finishes. Therefore, if it references a chunk that was identified as fossil in the fossil collection step, it should observe the fossil, not the chunk, so it will upload a new chunk, according to the second fossil access rule.
Therefore, if a backup procedure references a chunk before the chunk is marked a fossil, the fossil deletion step will not
delete the chunk until it sees the backup procedure finishes (as indicated by the appearance of a new snapshot file uploaded to the storage). This ensure that senarios depicted in Figure 2 will never happen.
delete the chunk until it sees the backup procedure finishes (as indicated by the appearance of a new snapshot file uploaded to the storage). This ensures that scenarios depicted in Figure 2 will never happen.
<p align="center">
<img src="https://github.com/gilbertchen/duplicacy-beta/blob/master/images/fossil_collection_2.png?raw=true"