EmilyMatt commented on code in PR #10833:
URL: https://github.com/apache/arrow-rs/pull/10833#discussion_r3862209290
##########
arrow-ipc/src/compression.rs:
##########
@@ -328,8 +328,15 @@ fn compress_zstd(
context: &mut IpcWriteContext,
level: i32,
) -> Result<(), ArrowError> {
- let result = context.zstd_compressor(level).compress(input)?;
- output.extend_from_slice(&result);
+ let start = output.len();
+ output.reserve(zstd::zstd_safe::compress_bound(input.len()));
Review Comment:
Yeah I just took it from the function itself as it seems to do all those
steps except into a new Vec
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