[jira] [Created] (FLINK-16674) Add documentation about how to use user-defined metrics for Python UDF

[Shang Yuanchun (Jira)]

Hequn Cheng created FLINK-16674:
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             Summary: Add documentation about how to use user-defined metrics for Python UDF
                 Key: FLINK-16674
                 URL: https://issues.apache.org/jira/browse/FLINK-16674
             Project: Flink
          Issue Type: Sub-task
          Components: API / Python, Documentation
            Reporter: Hequn Cheng
            Assignee: Hequn Cheng
             Fix For: 1.11.0






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