Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/19222
Instead of round-robin the memory block type across iterations, can we just
operate on all the memory blocks in each iteration? Then we can remove the
`if-else` and make the benchmark focus more on the memory block?
As a comparison, we can create a byte array, a long array, an offheap
array, and also operate on them in each iteration.
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