peter-toth opened a new pull request #23731: [SPARK-26572][SQL] fix aggregate 
codegen result evaluation
URL: https://github.com/apache/spark/pull/23731
 
 
   ## What changes were proposed in this pull request?
   
   This PR is correctness fix in `HashAggregateExec` code generation. It forces 
evaluation of result expressions before calling consume to avoid multiple 
executions.
   
   ## How was this patch tested?
   
   New UT was added.
   

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