Github user dilipbiswal commented on the issue: https://github.com/apache/spark/pull/22641 @srowen > I would vote against running tests that we think have any value randomly. It's just the wrong way to solve problems, as much as it would be to simply run 90% of our test suites each time on the theory that eventually we'd catch bugs. OK. > If there are, say, 3 codecs, and the point is to test whether one specified codec overrides another, does that really need more than 1 test? is there any reason to believe that override works/doesn't work differently for different codecs? Or are 3 tests sufficient, one to test overriding of each? @gatorsmile Would you have some input here. Can we reduce the codec input set, given we are just testing precedence
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