lirui-apache commented on a change in pull request #11093: [FLINK-16055][hive] 
Avoid catalog functions when listing Hive built-i…
URL: https://github.com/apache/flink/pull/11093#discussion_r380019248
 
 

 ##########
 File path: 
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/catalog/hive/client/HiveShimV120.java
 ##########
 @@ -148,6 +151,9 @@ public CatalogColumnStatisticsDataDate 
toFlinkDateColStats(ColumnStatisticsData
 
        @Override
        public Optional<FunctionInfo> getBuiltInFunctionInfo(String name) {
+               if (isCatalogFunctionName(name)) {
+                       return Optional.empty();
+               }
                Optional<FunctionInfo> functionInfo = getFunctionInfo(name);
 
                if (functionInfo.isPresent() && 
isBuiltInFunctionInfo(functionInfo.get())) {
 
 Review comment:
   Since this is a public API, I'd rather not to assume the name has been 
filtered. I'll do some refactor to avoid duplicated code

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