abstractdog commented on a change in pull request #2479:
URL: https://github.com/apache/hive/pull/2479#discussion_r690407521



##########
File path: 
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedListColumnReader.java
##########
@@ -479,6 +501,9 @@ private boolean compareBytesColumnVector(BytesColumnVector 
cv1, BytesColumnVecto
     int length2 = cv2.vector.length;
     if (length1 == length2) {
       for (int i = 0; i < length1; i++) {
+        if (cv1.vector[i] == null && cv2.vector[i] == null) {
+          continue;

Review comment:
       sorry, I don't get this, how do you mean?




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