Xuanwo commented on code in PR #837:
URL: https://github.com/apache/iceberg-rust/pull/837#discussion_r1900622944
##########
crates/iceberg/src/arrow/schema.rs:
##########
@@ -741,7 +766,7 @@ macro_rules! get_parquet_stat_as_datum {
};
Some(Datum::new(
primitive_type.clone(),
-
PrimitiveLiteral::Int128(i128::from_be_bytes(bytes.try_into()?)),
+
PrimitiveLiteral::Int128(i128::from_be_bytes(extend_to_i128_big_endian(bytes.into())?)),
Review Comment:
I revisited the code and found that the root cause might be that we didn't
handle the decimal bytes data correctly. By design, Iceberg only keeps the
smallest bits of the decimal. To decode it properly, we may need to follow the
same logic outlined here:
https://github.com/apache/iceberg-rust/blob/09fa1fa19488ab63c042aa692ac730fe1a7dc987/crates/iceberg/src/spec/values.rs#L436-L445
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