alamb commented on code in PR #7911:
URL: https://github.com/apache/arrow-rs/pull/7911#discussion_r2202833244
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parquet-variant/src/builder.rs:
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@@ -315,29 +343,29 @@ impl MetadataBuilder {
let string_start = offset_start + (nkeys + 1) * offset_size as usize;
let metadata_size = string_start + total_dict_size;
- let mut metadata = Vec::with_capacity(metadata_size);
+ metadata_buffer.reserve(metadata_size);
Review Comment:
I think that is what `reserve` does
https://doc.rust-lang.org/std/vec/struct.Vec.html#method.reserve
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