Dandandan commented on code in PR #7984:
URL: https://github.com/apache/arrow-rs/pull/7984#discussion_r2227955629
##########
arrow-array/src/builder/generic_bytes_builder.rs:
##########
@@ -67,8 +67,8 @@ impl<T: ByteArrayType> GenericByteBuilder<T> {
value_buffer: MutableBuffer,
null_buffer: Option<MutableBuffer>,
) -> Self {
- let offsets_builder =
BufferBuilder::<T::Offset>::new_from_buffer(offsets_buffer);
- let value_builder = BufferBuilder::<u8>::new_from_buffer(value_buffer);
+ let offsets_builder =
Vec::from(offsets_buffer.typed_data::<T::Offset>());
+ let value_builder = Vec::from(value_buffer.as_slice());
Review Comment:
This seems it does a copy?
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