clintropolis commented on code in PR #13364:
URL: https://github.com/apache/druid/pull/13364#discussion_r1023214583
##########
processing/src/main/java/org/apache/druid/segment/data/FrontCodedIndexedWriter.java:
##########
@@ -337,15 +340,7 @@ public static int unsignedCompare(
if (b2 == null) {
return 1;
}
- final int commonLength = Math.min(b1.length, b2.length);
-
- for (int i = 0; i < commonLength; i++) {
- final int cmp = FrontCodedIndexed.unsignedByteCompare(b1[i], b2[i]);
- if (cmp != 0) {
- return cmp;
- }
- }
- return Integer.compare(b1.length, b2.length);
+ return StringUtils.compareUtf8(b1, b2);
Review Comment:
We could use the two strings from the job that stumbled onto this issue
<img width="1020" alt="Screen Shot 2022-11-10 at 4 43 39 PM"
src="https://user-images.githubusercontent.com/1577461/202015335-662b7be2-348f-4d80-af8e-5a1845b382a7.png";>
```
final String s1 = "（請參見已被刪除版本）";
final String s2 = "\uD83D\uDCA9";
```
which could be added to this test
https://github.com/apache/druid/blob/master/processing/src/test/java/org/apache/druid/segment/data/FrontCodedIndexedTest.java#L241
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