Jackie-Jiang commented on code in PR #10704:
URL: https://github.com/apache/pinot/pull/10704#discussion_r1204767490
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pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/ComparisonColumns.java:
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@@ -37,10 +38,45 @@ public int getComparableIndex() {
return _comparableIndex;
}
+ public int compareToSealed(ComparisonColumns other) {
+ /*
+ - iterate over all columns
+ - if any value in _values is greater than its counterpart in
_other._values, keep _values as-is and return 1
+ - if any value in _values is less than its counterpart in
_other._values _and_ none are greater than their
+ counterpart in _other._values, keep _values as-is and return -1
+ - i.e. no value in _this_ is greater than its counterpart in _other
+ - if all values between the two sets of Comparables are equal
(compareTo == 0), keep _values as-is and return 0
+ */
+ int comparisonResult;
+ int accumResult = 0;
+
+ for (int i = 0; i < _values.length; i++) {
+ Comparable comparisonValue = _values[i];
+ Comparable otherComparisonValue = other.getValues()[i];
+ if (otherComparisonValue == null) {
+ continue;
+ } else {
+ comparisonResult = comparisonValue.compareTo(otherComparisonValue);
Review Comment:
This can throw NPE when `comparisonValue` is `null`
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