tustvold commented on code in PR #3036:
URL: https://github.com/apache/arrow-rs/pull/3036#discussion_r1015009172
##########
parquet/src/encodings/rle.rs:
##########
@@ -509,6 +514,12 @@ impl RleDecoder {
let bit_reader = self.bit_reader.as_mut().expect("bit_reader should be
set");
if let Some(indicator_value) = bit_reader.get_vlq_int() {
+ // fastparquet adds padding to the end of pages. This is not
spec-compliant
Review Comment:
Looking at the fastparquet code, the bitpacking logic appears like it would
pad to 4-byte boundaries as a consequence of it using a 32-bit accumulator
https://github.com/dask/fastparquet/blob/main/fastparquet/cencoding.pyx#L277
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