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Posted to dev@flink.apache.org by "LI Guobao (Jira)" <ji...@apache.org> on 2019/12/03 13:39:00 UTC

[jira] [Created] (FLINK-15040) Open function is not called in UDF AggregateFunction

LI Guobao created FLINK-15040:
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             Summary: Open function is not called in UDF AggregateFunction
                 Key: FLINK-15040
                 URL: https://issues.apache.org/jira/browse/FLINK-15040
             Project: Flink
          Issue Type: Bug
            Reporter: LI Guobao


I am trying to register a metric in an aggregate UDF by overriding the *open* function. According to the documentation, the *open* function can be override to retrieve the metric group to do the metric registration. But it works only on ScalarFunction but not on AggregateFunction. Because the *open* function is not call by AggregateFunction.



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