Github user scwf commented on the issue:
https://github.com/apache/spark/pull/16633
Again, to clean, I am against the performance regression in flowing case
0. limit num is 100,000,000
1. the original table rows is very big, much larger than 100,000,000 rows
2. after local limit stage, the output row num is about/nearly 100,000,000
rows
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