marmbrus commented on issue #27941: [SPARK-31178][SQL] Prevent V2 exec nodes from executing multiple times URL: https://github.com/apache/spark/pull/27941#issuecomment-600799358 Just to check my understanding, the testing gap here was that none of our existing DS2 tests called `collect()` on the resulting DataFrame? We were just relying on the implicit execution? Are there other things we need to be testing? `take()`? etc?
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