[C#] Option to create barrier at checkpoint version switch, support rollback #813
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…ent checkpoint versions at the same time. In PREPARE phase, refresh will wait for threads to get to the next version.
…re, and it will undo any uncheckpointed data. Make sure store is quiesced before attempting to call Recover on it.
badrishc
changed the title
TedHartMS
approved these changes
Apr 18, 2023
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Add Checkpoint option (default disabled) for whether we use a barrier to ensure that threads are not in two different checkpoint versions at the same time.
In the (PREPARE, v) phase, refresh will wait for all threads to get to the next version (IN_PROGRESS, v+1) before proceeding with the operation.
Also support basic recovery rollback, just call Recover on an existing store, and it will undo any uncheckpointed data before recovering to the given checkpoint. Make sure store is quiesced before attempting to call Recover on it.