alamb commented on code in PR #9093:
URL: https://github.com/apache/arrow-rs/pull/9093#discussion_r3093243353
##########
parquet/src/arrow/array_reader/fixed_len_byte_array.rs:
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@@ -284,6 +291,15 @@ fn move_values<F>(
}
impl ValuesBuffer for FixedLenByteArrayBuffer {
+ fn with_capacity(_capacity: usize) -> Self {
+ // byte_length is not known at trait level, so we return a default
buffer
+ // The decoder will pre-allocate when it knows both capacity and
byte_length
+ Self {
+ buffer: Vec::new(),
+ byte_length: None,
+ }
+ }
+
fn pad_nulls(
Review Comment:
We can do this as a follow on PR
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