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https://issues.jenkins-ci.org/browse/JENKINS-11028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=159117#comment-159117
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Chris Huseman commented on JENKINS-11028:
-----------------------------------------
It looks like this is an issue in SVNKit/svn libraries.
It fails on a case-insensitive file system when the path to the working copy
directory is different on disk than in the external.
So, for example:
Assume there is a src/Web/scripts folder that is tracked in the svn repository.
Assume there is an external defined as: https://svn.foo.com/web/scripts/baz
src/web/scripts/baz
Using the SVN command-line client or SVNKit, the status of src/Web/scripts/baz
in the working copy is unknown.
The fix is to match the case of the external path:
https://svn.foo.com/web/scripts/baz src/Web/scripts/baz
The status is then properly identified as an external and not deleted by
hudson.scm.subversion.UpdateWithCleanUpdater.
> Emulate clean checkout deletes svn:externals folders if the relative local
> subdirectory is several levels deep
> --------------------------------------------------------------------------------------------------------------
>
> Key: JENKINS-11028
> URL: https://issues.jenkins-ci.org/browse/JENKINS-11028
> Project: Jenkins
> Issue Type: Bug
> Components: subversion
> Affects Versions: current
> Reporter: schallm
>
> We set all externals at the root level (trunk) of our svn tree. This is so
> all externals are easily found both manually and programmatically without
> recursion of all folders. On our trunk folder we have the svn:external set
> similar to the following:
> https://svn.foo.com/bar/bin lib/bar
> https://svn.foo.com/web/scripts/baz src/web/scripts/baz
> When Jenkin's svn module does a build with the "Emulate clean ..." option
> set, the lib/bar folder is not removed, however the src/web/scripts/baz
> folder is. When the svn update is called, the folder is brought back down.
> We have several large externals that are having this problem causing our
> builds to take a long time due to the unnecessary removal and re-download of
> the external files.
> It would be great if all external folders were left alone.
> Thanks
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