Rich-T-kid commented on code in PR #12077:
URL: https://github.com/apache/arrow-rs/pull/12077#discussion_r4475702172
##########
arrow-ipc/src/compression.rs:
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@@ -386,6 +377,37 @@ fn decompress_zstd(
))
}
+/// Reads `decoder` to its end, expecting `len` bytes, without reserving `len`
up front.
+///
+/// `len` comes from the sender, so the buffer starts at no more than
`MAX_PREALLOC_BYTES` and
+/// doubles, capped at `len`, only as the decoder fills it: a length the data
does not back costs
+/// one bounded allocation, and the buffer never runs more than a factor of
two ahead of the
+/// decompressed bytes.
+#[cfg(any(feature = "lz4", feature = "zstd"))]
Review Comment:
ignore this comment
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