Sergey Nuyanzin created FLINK-40941:
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             Summary: Add warmup for janino 
                 Key: FLINK-40941
                 URL: https://issues.apache.org/jira/browse/FLINK-40941
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Runtime
            Reporter: Sergey Nuyanzin
            Assignee: Sergey Nuyanzin


Currently first time (on cold jvm) takes too much time for janino to compile 
classes.
Next calls for same classes are much shorter (JIT)
need a dummy warmp (also locally it shows improvement about 2 times)



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