lyang24 commented on code in PR #9093:
URL: https://github.com/apache/arrow-rs/pull/9093#discussion_r2681259271
##########
parquet/src/arrow/array_reader/builder.rs:
##########
@@ -119,6 +122,15 @@ impl<'a> ArrayReaderBuilder<'a> {
self
}
+ /// Set the batch size for pre-allocating internal buffers
+ ///
+ /// This allows the reader to pre-allocate buffers with the expected
capacity,
+ /// avoiding reallocations when reading the first batch of data.
+ pub fn with_batch_size(mut self, batch_size: usize) -> Self {
Review Comment:
fixed
##########
parquet/src/arrow/record_reader/buffer.rs:
##########
@@ -19,6 +19,12 @@ use crate::arrow::buffer::bit_util::iter_set_bits_rev;
/// A buffer that supports padding with nulls
pub trait ValuesBuffer: Default {
Review Comment:
good call fixed
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