uros-db commented on code in PR #45421:
URL: https://github.com/apache/spark/pull/45421#discussion_r1516380909


##########
common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java:
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@@ -384,27 +387,47 @@ public boolean startsWith(final UTF8String prefix) {
   }
 
   public boolean startsWith(final UTF8String prefix, int collationId) {
-    if (CollationFactory.fetchCollation(collationId).isBinaryCollation) {
+    if (collationId == CollationFactory.DEFAULT_COLLATION_ID) {

Review Comment:
   we shouldn't make changes to the original logic, this part was fine
   in this PR, we should only focus on the "third" type of collations 
(non-binary, non-lowercase)



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