Dear list,
I have a question regarding concurrency guarantees of Rados. Suppose I
have two nodes, say A and B, both running a process, and both using the
same rados storage pool, maybe connected through different OSDs. Suppose
node A updates an object in the storage pool, and after completion
immediately notifies B (through its own messaging layer) that that
specific object has been updated. Then, can I assume that, if B re-reads
that object, it will always get the updated one? If not, what would be
the recommended way of notifying B?
IOW, what kind of consistency model should I assume?
Thanks,
Rutger
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