Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/2276#issuecomment-54653232
No, alpha means pre-branch-2 hadoop (I think, Hadoop branching is not
exactly an exact science). Anyway, there are stable releases without YARN-1203.
So that probably should be handled.
If there isn't an API to figure out the Yarn version, I'd use reflection to
detect a method that was added after YARN-1203 (preferrably around this API),
and only apply the fix if the method is available.
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