Mercurial > hg
view tests/test-generaldelta.t @ 28240:1ac8ce137377
changegroup: fix treemanifests on merges
The current code for generating treemanifest revisions takes the list
of files in the changeset and finds the directories from them. This
does not work for merges, since a merge may pick file A from one side
and file B from another and neither of them would appear in the
changeset's "files" list, but the manifest would still change.
Fix this by instead walking the root manifest log for all needed
revisions, storing all needed file and subdirectory revisions, then
recursively visiting the subdirectories. This also turns out to be
faster: cloning a version of hg core converted to treemanifests went
from ~28s to ~19s (timing somewhat unfair: before this patch, timed
until crash; after this patch, timed until manifests complete).
The new algorithm is used only on treemanifest repos. Although it
works equally well on flat manifests, we leave the iteration over
files in the changeset for flat manifests for now.
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Fri, 12 Feb 2016 23:09:09 -0800 |
parents | d9bfe6289acf |
children | 6a98f9408a50 |
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Check whether size of generaldelta revlog is not bigger than its regular equivalent. Test would fail if generaldelta was naive implementation of parentdelta: third manifest revision would be fully inserted due to big distance from its paren revision (zero). $ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no $ cd repo $ echo foo > foo $ echo bar > bar $ echo baz > baz $ hg commit -q -Am boo $ hg clone --pull . ../gdrepo -q --config format.generaldelta=yes $ for r in 1 2 3; do > echo $r > foo > hg commit -q -m $r > hg up -q -r 0 > hg pull . -q -r $r -R ../gdrepo > done $ cd .. >>> import os >>> regsize = os.stat("repo/.hg/store/00manifest.i").st_size >>> gdsize = os.stat("gdrepo/.hg/store/00manifest.i").st_size >>> if regsize < gdsize: ... print 'generaldata increased size of manifest' Verify rev reordering doesnt create invalid bundles (issue4462) This requires a commit tree that when pulled will reorder manifest revs such that the second manifest to create a file rev will be ordered before the first manifest to create that file rev. We also need to do a partial pull to ensure reordering happens. At the end we verify the linkrev points at the earliest commit. $ hg init server --config format.generaldelta=True $ cd server $ touch a $ hg commit -Aqm a $ echo x > x $ echo y > y $ hg commit -Aqm xy $ hg up -q '.^' $ echo x > x $ echo z > z $ hg commit -Aqm xz $ hg up -q 1 $ echo b > b $ hg commit -Aqm b $ hg merge -q 2 $ hg commit -Aqm merge $ echo c > c $ hg commit -Aqm c $ hg log -G -T '{rev} {shortest(node)} {desc}' @ 5 ebb8 c | o 4 baf7 merge |\ | o 3 a129 b | | o | 2 958c xz | | | o 1 f00c xy |/ o 0 3903 a $ cd .. $ hg init client --config format.generaldelta=false --config format.usegeneraldelta=false $ cd client $ hg pull -q ../server -r 4 $ hg debugindex x rev offset length base linkrev nodeid p1 p2 0 0 3 0 1 1406e7411862 000000000000 000000000000 $ cd .. Test "usegeneraldelta" config (repo are general delta, but incoming bundle are not re-deltified) delta coming from the server base delta server are not recompressed. (also include the aggressive version for comparison) $ hg clone repo --pull --config format.usegeneraldelta=1 usegd requesting all changes adding changesets adding manifests adding file changes added 4 changesets with 6 changes to 3 files (+2 heads) updating to branch default 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg clone repo --pull --config format.generaldelta=1 full requesting all changes adding changesets adding manifests adding file changes added 4 changesets with 6 changes to 3 files (+2 heads) updating to branch default 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg -R repo debugindex -m rev offset length base linkrev nodeid p1 p2 0 0 104 0 0 cef96823c800 000000000000 000000000000 1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000 2 161 57 0 2 134fdc6fd680 cef96823c800 000000000000 3 218 104 3 3 723508934dad cef96823c800 000000000000 $ hg -R usegd debugindex -m rev offset length delta linkrev nodeid p1 p2 0 0 104 -1 0 cef96823c800 000000000000 000000000000 1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000 2 161 57 1 2 134fdc6fd680 cef96823c800 000000000000 3 218 57 0 3 723508934dad cef96823c800 000000000000 $ hg -R full debugindex -m rev offset length delta linkrev nodeid p1 p2 0 0 104 -1 0 cef96823c800 000000000000 000000000000 1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000 2 161 57 0 2 134fdc6fd680 cef96823c800 000000000000 3 218 57 0 3 723508934dad cef96823c800 000000000000 Test format.aggressivemergedeltas $ hg init --config format.generaldelta=1 aggressive $ cd aggressive $ cat << EOF >> .hg/hgrc > [format] > generaldelta = 1 > EOF $ touch a b c d e $ hg commit -Aqm side1 $ hg up -q null $ touch x y $ hg commit -Aqm side2 - Verify non-aggressive merge uses p1 (commit 1) as delta parent $ hg merge -q 0 $ hg commit -q -m merge $ hg debugindex -m rev offset length delta linkrev nodeid p1 p2 0 0 59 -1 0 8dde941edb6e 000000000000 000000000000 1 59 61 0 1 315c023f341d 000000000000 000000000000 2 120 65 1 2 2ab389a983eb 315c023f341d 8dde941edb6e $ hg strip -q -r . --config extensions.strip= - Verify aggressive merge uses p2 (commit 0) as delta parent $ hg up -q -C 1 $ hg merge -q 0 $ hg commit -q -m merge --config format.aggressivemergedeltas=True $ hg debugindex -m rev offset length delta linkrev nodeid p1 p2 0 0 59 -1 0 8dde941edb6e 000000000000 000000000000 1 59 61 0 1 315c023f341d 000000000000 000000000000 2 120 62 0 2 2ab389a983eb 315c023f341d 8dde941edb6e Test that strip bundle use bundle2 $ hg --config extensions.strip= strip . 0 files updated, 0 files merged, 5 files removed, 0 files unresolved saved backup bundle to $TESTTMP/aggressive/.hg/strip-backup/1c5d4dc9a8b8-6c68e60c-backup.hg (glob) $ hg debugbundle .hg/strip-backup/* Stream params: {'Compression': 'BZ'} changegroup -- "{'version': '02'}" 1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9 $ cd ..