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It would be nice to add `append_nulls` to MapBuilder, similar to `append_nulls` on `GenericListBuilder`. Appending the nulls at once, instead of using a loop has some nice performance implications: Closes apache#9431 ``` Benchmark results (1,000,000 nulls): ┌─────────────────────────┬─────────┐ │ Method │ Time │ ├─────────────────────────┼─────────┤ │ append(false) in a loop │ 2.36 ms │ ├─────────────────────────┼─────────┤ │ append_nulls(N) │ 50 µs │ └─────────────────────────┴─────────┘ ```
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Which issue does this PR close?
Closes #9431
Rationale for this change
It would be nice to add
append_nullsto MapBuilder, similar toappend_nullsonGenericListBuilder. Appending the nulls at once, instead of using a loop has some nice performance implications:What changes are included in this PR?
A new public API.
Are these changes tested?
With some fresh unit tests.
Are there any user-facing changes?
A nice and convient new public API