Ernst de Haan created SCM-739:
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Summary: Use "git --depth 1" When Checking Out
Key: SCM-739
URL: https://jira.codehaus.org/browse/SCM-739
Project: Maven SCM
Issue Type: Bug
Components: maven-scm-provider-git
Affects Versions: 1.8.1
Reporter: Ernst de Haan
*Executive summary: Please use {{--depth 1}} when checking out from a git
repository.*
Currently when doing {{mvn release:prepare release:perform}}, the git checkout
step takes a significant amount of time.
During the git checkout it appears to not only check out the correct version of
the code, but also _all_ history, as would be done with a regular:
{code:none}git clone URL{code}
However, git supports checking out only the latest version of the code base,
using this command: {code:none}git clone --depth 1 URL{code}
For the purpose of the Maven Release Plugin, that should be sufficient, as far
as I can see.
Changing the plugin to use {{--depth 1}} will:
- _significantly_ improve performance on larger repositories and/or with a lot
of history
- and reduce I/O on repositories with a lot of history.
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