yyanyy commented on a change in pull request #1747:
URL: https://github.com/apache/iceberg/pull/1747#discussion_r528935606
##########
File path:
api/src/main/java/org/apache/iceberg/expressions/ManifestEvaluator.java
##########
@@ -142,6 +142,25 @@ public Boolean or(Boolean leftResult, Boolean rightResult)
{
return ROWS_MIGHT_MATCH;
}
+ @Override
+ public <T> Boolean isNaN(BoundReference<T> ref) {
+ int pos = Accessors.toPosition(ref.accessor());
+ // containsNull encodes whether at least one partition value is null,
lowerBound is null if
+ // all partition values are null.
+ ByteBuffer lowerBound = stats.get(pos).lowerBound();
+ if (lowerBound == null) {
Review comment:
That should be doable, although I originally consider the scope of the
NaN support to be only on manifest entry level, I wasn't sure if we want to
extend it beyond that?
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