Thomas Lotze created JENKINS-13842:
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Summary: Mercurial poll triggers build due to unrelated changes
Key: JENKINS-13842
URL: https://issues.jenkins-ci.org/browse/JENKINS-13842
Project: Jenkins
Issue Type: Bug
Components: mercurial
Affects Versions: current
Reporter: Thomas Lotze
Assignee: Kohsuke Kawaguchi
The current Mercurial poll command is formulated such that it may falsely
detect new changes if there have ever been any branches with the same name as
that relevant to the build, but which are not ancestors of the current
working-directory revision in terms of the revision DAG.
If the repository happens to contain another branch with the same name, Jenkins
will continuously build the project and the only way to stop it is to push a
dummy merge of that other branch into the line of development Jenkins is
supposed to build.
A better way to ask for new descendants of the current working-directory
revision would be this:
hg log --branch $branch --rev "descendants(children($revision))"
The children predicate is needed because descendants always include the named
revision itself.
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