Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/357#issuecomment-40305010
Right, but you can just write `-Pyarn-alpha` and set `hadoop.version` and
`yarn.version` as you like. That gets what you need.
A better change would be to change automatically based on versions, but
that's not what this PR does.
I agree that Maven does not support ranges on property values. It would
support ranges on the artifact versions that a property like this controls. So
it may work to 'query' the version of `hadoop-client` for example.
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