201573 commented on code in PR #18699:
URL: https://github.com/apache/hudi/pull/18699#discussion_r3204662149


##########
hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/index/HoodieSparkIndexClient.java:
##########
@@ -150,7 +162,18 @@ public void 
createOrUpdateColumnStatsIndexDefinition(HoodieTableMetaClient metaC
   }
 
   private void createExpressionOrSecondaryIndex(HoodieTableMetaClient 
metaClient, String userIndexName, String indexType,
-                                                Map<String, Map<String, 
String>> columns, Map<String, String> options, Map<String, String> 
tableProperties) throws Exception {
+                                                Map<String, Map<String, 
String>> columns, Map<String, String> options, Map<String, String> 
tableProperties,
+                                                boolean ignoreIfExists) throws 
Exception {
+    String fullIndexName = indexType.equals(PARTITION_NAME_SECONDARY_INDEX)
+        ? PARTITION_NAME_SECONDARY_INDEX_PREFIX + userIndexName
+        : PARTITION_NAME_EXPRESSION_INDEX_PREFIX + userIndexName;
+    if (indexExists(metaClient, fullIndexName)) {

Review Comment:
   Thanks. I kept the nested shape here to match the record-index guard above 
and make the plain CREATE INDEX path fall through to the existing 
duplicate-index check in 
HoodieIndexUtils.getSecondaryOrExpressionIndexDefinition. That keeps the two 
CREATE INDEX paths visually consistent.



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