Github user kiszk commented on the issue:
https://github.com/apache/spark/pull/19222
@rxin While I did not perf microbench for megamorphic (up to 3
`ByteArrayMemoryBlock`, `OnHeapMemoryBlock`, and `OffHeapMemoryBlock`)
callsites, we confirmed that there is no performance regression in TPC-DS. It
seem to be representative regarding real workloads.
I will create and perf microbench for megamorphic (up to 3
`ByteArrayMemoryBlock`, `OnHeapMemoryBlock`, and `OffHeapMemoryBlock`)
callsites.
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