pvary commented on code in PR #14500:
URL: https://github.com/apache/iceberg/pull/14500#discussion_r2718760722
##########
api/src/main/java/org/apache/iceberg/expressions/InclusiveMetricsEvaluator.java:
##########
@@ -56,14 +56,24 @@ 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;
public InclusiveMetricsEvaluator(Schema schema, Expression unbound) {
this(schema, unbound, true);
}
public InclusiveMetricsEvaluator(Schema schema, Expression unbound, boolean
caseSensitive) {
StructType struct = schema.asStruct();
- this.expr = Binder.bind(struct, rewriteNot(unbound), caseSensitive);
+ Expression rewritten = rewriteNot(unbound);
+ this.expr = Binder.bind(struct, rewritten, caseSensitive);
+
+ // Create the signed UUID expression iff there are UUID predicates that
compare against bounds.
Review Comment:
Yes please.
It is not clear for me, and it is important
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