alamb commented on code in PR #8756:
URL: https://github.com/apache/arrow-rs/pull/8756#discussion_r2483587397
##########
parquet/src/file/serialized_reader.rs:
##########
@@ -471,6 +455,47 @@ pub(crate) fn decode_page(
Ok(result)
}
+/// Decompressed the specified buffer, starting from the specified offset,
using
+/// the provided decompressor if available and applicable. If the buffer is not
+/// compressed, it will be returned as is.
Review Comment:
I read
https://github.com/apache/parquet-format/blob/master/README.md#data-pages and I
agree with your assessment that if the decompressed_size=0 it corresponds to no
non-null values
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