flashmouse opened a new issue, #11142:
URL: https://github.com/apache/arrow-rs/issues/11142
### Is your feature request related to a problem or challenge?
DeltaBitPackDecoder::skip currently reconstructs every skipped value in
order to advance last_value:
value = residual + min_delta + last_value
last_value = value
This creates a loop-carried dependency through last_value: each iteration
must wait for the previous value, even though skip only needs the final
carry.
Since intermediate values are not needed, advance last_value by the
aggregate delta instead:
last_value += n * min_delta + sum(residuals)
### Describe the solution you'd like
_No response_
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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