amogh-jahagirdar commented on code in PR #15514:
URL: https://github.com/apache/iceberg/pull/15514#discussion_r2897542978
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data/src/main/java/org/apache/iceberg/data/DeleteFilter.java:
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@@ -210,7 +211,12 @@ private List<Predicate<T>> applyEqDeletes() {
Set<Integer> ids = entry.getKey();
Iterable<DeleteFile> deletes = entry.getValue();
- Schema deleteSchema = TypeUtil.select(requiredSchema, ids);
+ // Canonicalize the delete schema by sorting fields by ID so that the
same set of equality
+ // field IDs always produces the same schema, regardless of
requiredSchema column ordering.
+ Schema selectedSchema = TypeUtil.select(requiredSchema, ids);
+ List<Types.NestedField> sortedFields =
Lists.newArrayList(selectedSchema.columns());
+ sortedFields.sort(Comparator.comparingInt(Types.NestedField::fieldId));
+ Schema deleteSchema = new Schema(sortedFields);
Review Comment:
+1 I think I'd just expect a `selectInIDOrder` API to abstract this?
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