pvary commented on code in PR #8803:
URL: https://github.com/apache/iceberg/pull/8803#discussion_r1389360789


##########
core/src/main/java/org/apache/iceberg/BaseFile.java:
##########
@@ -185,13 +190,25 @@ public PartitionData copy() {
     this.partitionType = toCopy.partitionType;
     this.recordCount = toCopy.recordCount;
     this.fileSizeInBytes = toCopy.fileSizeInBytes;
-    if (fullCopy) {
-      this.columnSizes = SerializableMap.copyOf(toCopy.columnSizes);
-      this.valueCounts = SerializableMap.copyOf(toCopy.valueCounts);
-      this.nullValueCounts = SerializableMap.copyOf(toCopy.nullValueCounts);
-      this.nanValueCounts = SerializableMap.copyOf(toCopy.nanValueCounts);
-      this.lowerBounds = 
SerializableByteBufferMap.wrap(SerializableMap.copyOf(toCopy.lowerBounds));
-      this.upperBounds = 
SerializableByteBufferMap.wrap(SerializableMap.copyOf(toCopy.upperBounds));
+    if (copyStats) {

Review Comment:
   Had to move the proposed `SerializableMap` changes back to the `BaseFile` to 
avoid changing the default serialization of the `SerializableMap`:
   ```
       * Just this break:
           ./gradlew :iceberg-core:revapiAcceptBreak --justification "{why this 
break is ok}" \
             --code "java.class.defaultSerializationChanged" \
             --old "class org.apache.iceberg.util.SerializableMap<K extends 
java.lang.Object, V extends java.lang.Object>" \
             --new "class org.apache.iceberg.util.SerializableMap<K extends 
java.lang.Object, V extends java.lang.Object>"
   ```



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