Github user StefanRRichter commented on the issue:
https://github.com/apache/flink/pull/4445
I think the implementation of the change is good, but the performance
impact seems noticeable, at least in some cases. I think the additional bounds
checking in the hybrid case shows. Out of curiosity I deactivated the index
bounds checks and this closed all gaps between `HeapMemorySegment` and
`HybridMemorySegment` in the benchmarks that @NicoK mentioned.
If @StephanEwen has no concerns about the performance regression, I think
this could be merged.
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