Github user kayousterhout commented on the pull request: https://github.com/apache/spark/pull/339#issuecomment-40271104 The problem I was describing in the JIRA is that all but the last 2 tests in this suite are designed to test the pool / fairness mechanisms (i.e., that the output of rootPool.getSortedTaskSetQueue() is correct), not the scheduler code. I think the right solution here is to move these tests into a separate test suite specifically for the pool stuff -- not to make these tests use the scheduler (since using the scheduler obfuscates where the actually error would be if the tests failed).
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