nsivabalan commented on code in PR #9123:
URL: https://github.com/apache/hudi/pull/9123#discussion_r1261636806


##########
hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/HoodieSparkSqlWriter.scala:
##########
@@ -1094,6 +1094,11 @@ object HoodieSparkSqlWriter {
     if (mergedParams.contains(PRECOMBINE_FIELD.key())) {
       mergedParams.put(HoodiePayloadProps.PAYLOAD_ORDERING_FIELD_PROP_KEY, 
mergedParams(PRECOMBINE_FIELD.key()))
     }
+    if (mergedParams.get(OPERATION.key()).get == INSERT_OPERATION_OPT_VAL && 
mergedParams.contains(DataSourceWriteOptions.INSERT_DUP_POLICY.key())
+      && mergedParams.get(DataSourceWriteOptions.INSERT_DUP_POLICY.key()).get 
!= FAIL_INSERT_DUP_POLICY) {
+      // enable merge allow duplicates when operation type is insert
+      
mergedParams.put(HoodieWriteConfig.MERGE_ALLOW_DUPLICATE_ON_INSERTS_ENABLE.key(),
 "true")

Review Comment:
   nope. we are streamlining across spark-ds and spark-sql. 
   if operation type is insert, we do enable 
hoodie.merge.allow.duplicate.on.inserts if user does not explicitly set it. 



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