Minor Description
Currently， In testing EnsureRequirements's test cases to eliminate ShuffleExchange, The test code is not in conformity with the purpose of the test.These test cases are as follows:
1、test("EnsureRequirements eliminates Exchange if child has same partitioning")
The checking condition is that there is no ShuffleExchange in the physical plan. = = 2 It's not accurate here.
2、test("EnsureRequirements does not eliminate Exchange with different partitioning")
The purpose of the test is to not eliminate ShuffleExchange, but its test code is the same as test("EnsureRequirements eliminates Exchange if child has same partitioning")
