Andrew Dunstan <and...@dunslane.net> writes:
> Why not just say give me the snapshot currently held by process nnnn?
There's not a unique snapshot held by a particular process. Also, we
don't want to expend the overhead to fully publish every snapshot.
I think it's really necessary that the "sending" process take some
deliberate action to publish a snapshot.
> And please, not temp files if possible.
Barring the cleanup issue, I don't see why not. This is a relatively
low-usage feature, I think, so I wouldn't be much in favor of dedicating
shmem to it even if the space requirement were predictable.
regards, tom lane
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