Mercurial > hgsubversion
view tests/fixtures/externals.sh @ 890:78db88de9622
Partial metadata rebuilding
For highly active subversion repositories, it can be excruciatingly
slow to pull updates one at a time from subversion. One way around
this is to setup another mercurial repo that pulls new commits from
svn periodicly (say every 5 minutes). When you want to update your
repository, you can pull commits from this mercurial repository via
native mercurial protocols, which will be much faster than pulling
directly from svn.
Unfortunately, your metadata will be out of date after doing so.
Highly active repositories also tend to be very large, which means
that it takes a long time to rebuild your metadata from scratch. To
address this, this adds support to do a partial rebuild on the
metadata by processing only revisions that have been added to the
repository after the last revision we processed.
With the rev map 1k revisions (~2 days) behind tip updatemeta is
dramatically faster than rebuild meta:
$ hg --time svn updatemeta
Time: real 0.570 secs (user 0.480+0.000 sys 0.060+0.000)
$ hg --time svn rebuildmeta
Time: real 129.160 secs (user 128.570+0.000 sys 0.320+0.000)
author | David Schleimer <dschleimer@fb.com> |
---|---|
date | Sat, 12 May 2012 07:28:23 -0700 |
parents | a5be5ca638de |
children |
line wrap: on
line source
#!/bin/sh # # Generate externals.svndump # mkdir temp cd temp mkdir project-orig cd project-orig mkdir trunk mkdir branches mkdir externals cd .. svnadmin create testrepo svnurl=file://`pwd`/testrepo svn import project-orig $svnurl -m "init project" svn co $svnurl project cd project/externals mkdir project1 echo a > project1/a svn add project1 mkdir project2 echo a > project2/b svn add project2 svn ci -m "configure externals projects" cd ../trunk # Add an external reference echo a > a svn add a cat > externals <<EOF ^/externals/project1 deps/project1 EOF svn propset -F externals svn:externals . svn ci -m "set externals on ." # Add another one cat > externals <<EOF # A comment, then an empty line, then a blank line ^/externals/project1 deps/project1 -r2 ^/externals/project2@2 deps/project2 EOF svn propset -F externals svn:externals . svn ci -m "update externals on ." # Suppress an external and add one on a subdir cat > externals <<EOF -r2 ^/externals/project2@2 deps/project2 EOF svn propset -F externals svn:externals . mkdir subdir mkdir subdir2 svn add subdir subdir2 cat > externals <<EOF ^/externals/project1 deps/project1 EOF svn propset -F externals svn:externals subdir subdir2 svn ci -m "add on subdir" # Test branch with externals svn up cd ../branches svn copy ../trunk branch1 svn propdel svn:externals branch1/subdir2 svn ci -m 'externals in subtree' # Test branch with externals, removing on copy root svn copy ../trunk branch2 svn propdel svn:externals branch2 branch2/subdir2 svn ci -m 'externals in subtree, removed on root' cd ../trunk # Suppress the subdirectory svn rm --force subdir svn ci -m 'remove externals subdir' # Remove the property on subdir2 svn propdel svn:externals subdir2 svn ci -m 'remove externals subdir2' # Kill project2 externals, peg revision should preserve it cd .. svn up svn rm externals/project2 svn ci -m 'remove externals project2' cd trunk echo a >> a svn ci -m 'change a' cd ../.. svnadmin dump testrepo > ../externals.svndump