stevenzwu commented on code in PR #14500:
URL: https://github.com/apache/iceberg/pull/14500#discussion_r2756136738
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api/src/main/java/org/apache/iceberg/expressions/InclusiveMetricsEvaluator.java:
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@@ -56,14 +56,25 @@ public class InclusiveMetricsEvaluator {
private static final int IN_PREDICATE_LIMIT = 200;
private final Expression expr;
+ // Expression using signed UUID comparator for backward compatibility with
files written
+ // prior to the introduction of RFC-compliant UUID comparisons.
+ // Null if there are no UUID predicates comparing against bounds in the
expression.
+ private final Expression signedUuidExpr;
Review Comment:
Instead of generating a `signedUuidExpr`, can we just change the
`compartor.compare(...)` for `Literal` and `BoundTerm` to a wrapper method,
which check the literal or field type and performs the additional signed
comparator?
I am wondering if this can reduce the size of the changes.
- we probably don't need the `useSignedComparator` in the Literal constructor
- we probably don't need the changes in `ExpressionUtil`,
`ManifestEvaluator`.
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