zhztheplayer commented on PR #7573:
URL: 
https://github.com/apache/incubator-gluten/pull/7573#issuecomment-2418996213

   My intuition is when an iterator was closed, it should not be called through 
`hasNext()` or `next()`. Perhaps there is a root cause of 
https://github.com/apache/incubator-gluten/issues/7572 waiting us to find out.
   
   Instead of the PR's change, I think we can add a sanity check in `hasNext0` 
and `next0` to check if the iterator is closed. If it's closed, we throw an 
error indicating it's an illegal state.
   
   And we can then continue looking for a more proper solution for 
https://github.com/apache/incubator-gluten/issues/7572.


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