Maarten Breddels created ARROW-10207:
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Summary: C++] Unary kernels that results in a list have no
preallocated offset buffer
Key: ARROW-10207
URL: https://issues.apache.org/jira/browse/ARROW-10207
Project: Apache Arrow
Issue Type: Improvement
Reporter: Maarten Breddels
I noticed in
[https://github.com/apache/arrow/pull/8271]
That a string->list[string] kernel does not have the offsets preallocated in
the output. I believe there is a preference for not doing allocations in
kernels, so this can be optimized at a higher level. I think it can also be
done in this case.
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