RussellSpitzer commented on code in PR #14593:
URL: https://github.com/apache/iceberg/pull/14593#discussion_r2662688810
##########
api/src/test/java/org/apache/iceberg/expressions/TestInclusiveMetricsEvaluator.java:
##########
@@ -970,4 +970,172 @@ public void testNotNullInNestedStruct() {
.as("Should not read: optional_address.optional_street2 is optional")
.isFalse();
}
+
+ @Test
+ public void testNotEqWithSingleValue() {
+ DataFile rangeOfValues =
+ new TestDataFile(
+ "range_of_values.avro",
+ Row.of(),
+ 10,
+ ImmutableMap.of(3, 10L),
+ ImmutableMap.of(3, 0L),
+ ImmutableMap.of(3, 0L),
+ ImmutableMap.of(3, toByteBuffer(StringType.get(), "aaa")),
+ ImmutableMap.of(3, toByteBuffer(StringType.get(), "zzz")));
+
+ boolean shouldRead =
+ new InclusiveMetricsEvaluator(SCHEMA, notEqual("required",
"aaa")).eval(rangeOfValues);
+ assertThat(shouldRead)
+ .as("Should read: file has range of values, optimization doesn't
apply")
+ .isTrue();
+
+ DataFile singleValueFile =
+ new TestDataFile(
+ "single_value.avro",
+ Row.of(),
+ 10,
+ ImmutableMap.of(3, 10L),
+ ImmutableMap.of(3, 0L),
+ ImmutableMap.of(3, 0L),
+ ImmutableMap.of(3, toByteBuffer(StringType.get(), "abc")),
+ ImmutableMap.of(3, toByteBuffer(StringType.get(), "abc")));
+
+ shouldRead =
+ new InclusiveMetricsEvaluator(SCHEMA, notEqual("required",
"abc")).eval(singleValueFile);
+ assertThat(shouldRead)
+ .as("Should prune: file contains single value equal to literal")
Review Comment:
```suggestion
.as("Should prune: file contains single value unequal to literal")
```
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