Russ Hatch created CASSANDRA-7746:
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Summary: fix upgrade_through_versions local mode for rolling
upgrades
Key: CASSANDRA-7746
URL: https://issues.apache.org/jira/browse/CASSANDRA-7746
Project: Cassandra
Issue Type: Test
Reporter: Russ Hatch
Priority: Minor
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
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