[Monotone-devel] Re: netsync branch differences

[Lapo Luchini]

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Markus Schiltknecht wrote:
> grml% mtn sync venge.net "net.venge.monotone*"
> mtn: bytes in | bytes out | revs in | revs out
> mtn:   24.4 k |    53.0 k |     0/0 |      6/6mtn: operation canceled:
> Interrupt
> 
> grml% mtn sync venge.net
> "net.venge.monotone.cvsimport-branch-reconstruction"
> mtn: bytes in | bytes out | revs in | revs out
> mtn:  105.8 k |   178.2 k |     0/0 |    59/59mtn: operation canceled:
> Interrupt
> 
> Why does first sync push only 6 revisions, while the later, more
> restricted to one branch suddenly wants to push 59? Do I need to run a
> mtn db check?

Because in the second example the Merkle trie is build only with the
branch's revisions (also on server side!) and those extra 53 revisions
are probably revisions from other branches that the server doesn't know
it already has (because it was examining only that specific branch).
Filtering on all the branch dependencies gives it a bigger vision and
those 53 are noticed to be already at the destination.

Or at least, this is my current understanding of it, and is probably
inaccurate (because in that case the server could know those extra 53
are needed as well as the client does! so it must be slightly more
complicated than this).

    Lapo
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