lirui-apache commented on a change in pull request #15253:
URL: https://github.com/apache/flink/pull/15253#discussion_r604834219
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File path:
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/planner/delegation/hive/HiveParser.java
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@@ -192,6 +245,8 @@
try {
// creates SessionState
startSessionState(hiveConf, catalogManager);
+ // We override Hive's grouping function. Refer to the
implementation for more details.
+ hiveShim.registerTemporaryFunction("grouping",
HiveGenericUDFGrouping.class);
Review comment:
The function also needs overriding in hive's `FunctionRegistry` so that
hive code also uses the overridden one.
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