Mercurial > hg
view tests/test-unrelated-pull.t @ 51505:c9ceb4f60256 stable 6.7
phases: avoid N² behavior in `advanceboundary`
We allowed duplicated entries in the deque, which each entry could potentially
insert all its ancestors. So advancing boundary for the full repository would
mean each revision would walk all its ancestors, resulting in O(N²) iteration.
For repository of any decent size, N² is quickly insane.
We introduce a simple set to avoid this and get back to reasonable performance.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Fri, 15 Mar 2024 01:31:57 +0100 |
parents | eb586ed5d8ce |
children |
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$ hg init a $ cd a $ echo 123 > a $ hg add a $ hg commit -m "a" -u a $ cd .. $ hg init b $ cd b $ echo 321 > b $ hg add b $ hg commit -m "b" -u b $ hg pull ../a pulling from ../a searching for changes abort: repository is unrelated [255] $ hg pull -f ../a pulling from ../a searching for changes warning: repository is unrelated requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 9a79c33a9db3 (run 'hg heads' to see heads, 'hg merge' to merge) $ hg heads changeset: 1:9a79c33a9db3 tag: tip parent: -1:000000000000 user: a date: Thu Jan 01 00:00:00 1970 +0000 summary: a changeset: 0:01f8062b2de5 user: b date: Thu Jan 01 00:00:00 1970 +0000 summary: b $ cd ..