beliefer commented on a change in pull request #27019: [SPARK-30027][SQL] 
Support codegen for aggregate filters in HashAggregateExec
URL: https://github.com/apache/spark/pull/27019#discussion_r398435725
 
 

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 File path: sql/core/src/test/resources/sql-tests/inputs/group-by-filter.sql
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 @@ -1,4 +1,7 @@
--- Test filter clause for aggregate expression.
+-- Test filter clause for aggregate expression with codegen on and off.
+--CONFIG_DIM1 spark.sql.codegen.wholeStage=true
+--CONFIG_DIM1 
spark.sql.codegen.wholeStage=false,spark.sql.codegen.factoryMode=CODEGEN_ONLY
 
 Review comment:
   I can't understand this dimension config.
   When `spark.sql.codegen.wholeStage=false` and 
`spark.sql.codegen.factoryMode`.
   It means each operator will be compiled into single java and cannot fallback 
to interpreted ?
   Could you tell me more about this?

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