Details
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Improvement
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Status: Open
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Low
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Resolution: Unresolved
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None
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None
Description
Upgrade tests now have a local mode for easier debugging with local code modifications (instead of fetching remote versions). This works by locally changing branches and building cassandra as needed.
There's a potential problem for rolling upgrades because the code will be updated while some of the nodes are still using the last version. I'm not certain if this really affects much in practice but should be relatively straightforward to fix.
Instead of switching branches, the tests will need to check out the target branch/tag to another location on the filesystem. When upgrading, another version will be checked out to another location on the filesystem, etc. To keep this (hopefully) platform agnostic we should be able to use the python tempfile module, and git can probably be used to check out a single branch as described here: http://stackoverflow.com/questions/1778088/how-to-clone-a-single-branch-in-git