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Merged r5644 from trunk.

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scm: git: add comments of revision order in fetch_changesets().

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.1-stable@5646 e93f8b46-1217-0410-a6f0-8f06a7374b81
This commit is contained in:
Toshi MARUYAMA
2011-05-04 23:43:40 +00:00
parent 240254b1a3
commit 4fc2e757f6
1 changed files with 15 additions and 0 deletions
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15
app/models/repository/git.rb
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@@ -47,6 +47,21 @@ class Repository::Git < Repository
scm.tags
end
# In Git and Mercurial, revisions are not in date order.
# Mercurial fixed issues.
# * Redmine Takes Too Long On Large Mercurial Repository
# http://www.redmine.org/issues/3449
# * Sorting for changesets might go wrong on Mercurial repos
# http://www.redmine.org/issues/3567
# Database revision column is text, so Redmine can not sort by revision.
# Mercurial has revision number, and revision number guarantees revision order.
# Mercurial adapter uses "hg log -r 0:tip --limit 10"
# to get limited revisions from old to new.
# And Mercurial model stored revisions ordered by database id in database.
# So, Mercurial can use correct order revisions.
#
# But, Git 1.7.3.4 does not support --reverse with -n or --skip.
#
# With SCM's that have a sequential commit numbering, redmine is able to be
# clever and only fetch changesets going forward from the most recent one
# it knows about.