Timo Walther created FLINK-20485:
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             Summary: Map views are deserialized multiple times
                 Key: FLINK-20485
                 URL: https://issues.apache.org/jira/browse/FLINK-20485
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Runtime
            Reporter: Timo Walther
            Assignee: Timo Walther


The rework of aggregate functions in FLINK-18809 and FLINK-15803 caused a 
performance regression due to map views being deserialized multiple times. 



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