friendlymatthew commented on code in PR #8839:
URL: https://github.com/apache/arrow-rs/pull/8839#discussion_r2557914193
##########
arrow-row/src/lib.rs:
##########
@@ -1762,6 +1901,110 @@ unsafe fn decode_column(
},
_ => unreachable!(),
},
+ Codec::Union(converters, null_rows, _mode) => {
+ let len = rows.len();
+
+ let DataType::Union(union_fields, mode) = &field.data_type else {
+ unreachable!()
Review Comment:
I'm not sure if it's worth writing a descriptive message when the branch is
specifically designed for a case that will never hit
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