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https://issues.jenkins-ci.org/browse/JENKINS-12829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SCM/JIRA link daemon resolved JENKINS-12829.
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Resolution: Fixed
> A failed update sets revision of build to 000000+
> -------------------------------------------------
>
> Key: JENKINS-12829
> URL: https://issues.jenkins-ci.org/browse/JENKINS-12829
> Project: Jenkins
> Issue Type: Bug
> Components: mercurial
> Affects Versions: current
> Reporter: David Santiago
> Assignee: David Santiago
> Attachments: 000000.png
>
>
> The mercurial plugin ensures that a failed clone operation throws the
> corresponding exception, but that's not the case if the subsequent update
> fails: no check is done of the return code of the hg update command.
> The effect is that the revision of the build is set to 000000+, which causes
> a huge changelog calculation in the next build, as basically the calculated
> log includes all the changesets in the history of the repo.
> I've even seen a worse corner case, where a build is assigned up to three
> different revisions if, for example, two update attempts fail and the third
> one works when using the cache+share extension.
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