zhztheplayer commented on PR #6458:
URL: 
https://github.com/apache/incubator-gluten/pull/6458#issuecomment-2230143284

   Hi @jinchengchenghh,
   
   If it's for testing purpose from Java side, my suggestion is not to 
propagate the call down to C++ code. We can add a Java API 
`ColumnarBatches#toString` which converts the input batch to Arrow batch (via 
#ensureLoaded), then use some regular ways to stringify it. This could be the 
simplest way to make the API support both Velox and Arrow data.


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