pitrou commented on code in PR #41117:
URL: https://github.com/apache/arrow/pull/41117#discussion_r1559577762
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cpp/src/arrow/io/compressed.cc:
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@@ -353,7 +356,9 @@ class CompressedInputStream::Impl {
// Try to feed more data into the decompressed_ buffer.
Status RefillDecompressed(bool* has_data) {
- // First try to read data from the decompressor
+ // First try to read data from the decompressor.
+ // This doesn't use `compressed_buffer_available()` because when
compressed_
+ // exists, even the decompressor might still have data to be read.
Review Comment:
```suggestion
// First try to read data from the decompressor, unless we haven't read
any
// compressed data yet.
```
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