Github user kiszk commented on the issue:
https://github.com/apache/spark/pull/13909
@cloud-fan Yeah, to keep primitive array and to use `UnsafeArrayWrite` can
avoid extra bulkcopy.
To achieve this avoidance, I think that we need to create
`GenericArrayData` after enabling https://github.com/apache/spark/pull/13758
instead of `UnsfeArrayData`. To create `GenericArrayData` with
https://github.com/apache/spark/pull/13758 can keep a primitive array inside it.
Does it mean what you want to do?
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