mbutrovich commented on PR #1474:
URL: 
https://github.com/apache/datafusion-comet/pull/1474#issuecomment-2702261191

   For example, `CometNativeShuffleSuite::native shuffle: different data type` 
passes with `COMET_PARQUET_SCAN_IMPL=native_datafusion` on main but fails here. 
If you dig into the plans, on main we're not actually running the scan in 
DataFusion. We fall back, though it's not clear why (supporting this PR's 
necessity). However, with this PR `ParquetExec` shows up in the native plans. I 
don't have a root cause on the failure, but I'm not sure why we were not 
letting `ParquetExec` run this test on main. I'll step through plan generation 
on main and try to make sense of it.


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