pitrou commented on code in PR #39807:
URL: https://github.com/apache/arrow/pull/39807#discussion_r1532064478
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cpp/src/arrow/io/compressed.cc:
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@@ -284,8 +308,12 @@ class CompressedInputStream::Impl {
int64_t decompress_size = kDecompressSize;
while (true) {
- ARROW_ASSIGN_OR_RAISE(decompressed_,
- AllocateResizableBuffer(decompress_size, pool_));
+ if (decompressed_ == nullptr) {
+ ARROW_ASSIGN_OR_RAISE(decompressed_,
+ AllocateResizableBuffer(decompress_size, pool_));
+ } else {
+ RETURN_NOT_OK(decompressed_->Resize(decompress_size,
/*shrink_to_fit=*/false));
Review Comment:
> Mostly I think actually no really Resize happens, the size is likely to be
same as `kDecompressSize`
That's quite possible. You could try to log this and see what happens during
the tests?
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