Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/19943
@henrify , @cloud-fan . For @henrify 's question, I got the answer. The
answer is negative like the official document. Even ORC reader side, the data
for a VectorizedRowBatch comes from more than one internal buffer some cases.
So, even ORC reader itself doesn't assume that.
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