[SPARK-25471][PYTHON][TEST] Fix pyspark-sql test error when using Python 3.6 and Pandas 0.23 #22477
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What changes were proposed in this pull request?
Fix test that constructs a Pandas DataFrame by specifying the column order. Previously this test assumed the columns would be sorted alphabetically, however when using Python 3.6 with Pandas 0.23 or higher, the original column order is maintained. This causes the columns to get mixed up and the test errors.
Manually tested with
python/run-testsusing Python 3.6.6 and Pandas 0.23.4