Github user michalsenkyr commented on the issue:
https://github.com/apache/spark/pull/16541
I added the benchmarks based on the code you provided but I am getting
almost the same results before and after the optimization (see description). So
either the added benefit is really small or I didn't write/tune the benchmarks
quite right. I would appreciate if you could take a look at them.
I will also take a look at the `UnsafeArrayData` optimization later and try
to include it in my next commit.
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