sam-1112 commented on code in PR #7196:
URL: https://github.com/apache/datafusion-comet/pull/7196#discussion_r4369354929
##########
native/core/src/parquet/parquet_support.rs:
##########
@@ -461,9 +462,7 @@ pub(crate) fn match_struct_fields(
parquet_options.case_sensitive,
parquet_options.use_field_id,
);
- (0..to_fields.len())
- .map(|to_pos| resolver.resolve(to_pos))
- .collect()
+ resolver.resolve_all()
Review Comment:
I have fixed by retaining independent selections for validation and masking
losers only for value conversion. Losing container requests now raise
structural errors, while losing leaf conversions retain their NULL behavior.
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