jackye1995 commented on a change in pull request #1872:
URL: https://github.com/apache/iceberg/pull/1872#discussion_r556968041
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File path: api/src/main/java/org/apache/iceberg/ManifestFile.java
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@@ -199,6 +200,16 @@ default boolean hasDeletedFiles() {
*/
boolean containsNull();
+ /**
+ * Returns true if at least one data file in the manifest has a nan value
for the field.
+ * Null if this information doesn't exist.
+ * <p>
+ * Default to return null to ensure backward compatibility.
+ */
+ default Boolean containsNaN() {
+ return null;
Review comment:
I see, make sense, thanks for the explanation.
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