MassivePizza commented on code in PR #10345:
URL: https://github.com/apache/arrow-rs/pull/10345#discussion_r3614624011
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parquet/src/compression.rs:
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@@ -534,22 +535,31 @@ mod zstd_codec {
output_buf: &mut Vec<u8>,
uncompress_size: Option<usize>,
) -> Result<usize> {
- let capacity = uncompress_size.unwrap_or_else(|| {
- // Get the decompressed size from the zstd frame header
- zstd::zstd_safe::get_frame_content_size(input_buf)
- .ok()
- .flatten()
- .unwrap_or(input_buf.len() as u64 * 4) as usize
+ let offset = output_buf.len();
+ let len = uncompress_size.unwrap_or_else(|| {
Review Comment:
I have this in mind:
```suggestion
let capacity = uncompress_size
.or_else(|| {
// Get the decompressed size from the zstd frame header
zstd::zstd_safe::get_frame_content_size(input_buf)
.ok()
.flatten()
.map(|size| size as usize)
})
.unwrap_or(input_buf.len().saturating_mul(4));
output_buf.reserve(capacity);
```
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