[jira] [Created] (FLINK-21842) Support user defined WindowAssigner, Trigger and ProcessWindowFunction on Python DataStream API

[Shang Yuanchun (Jira)]

Wei Zhong created FLINK-21842:
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             Summary: Support user defined WindowAssigner, Trigger and ProcessWindowFunction on Python DataStream API
                 Key: FLINK-21842
                 URL: https://issues.apache.org/jira/browse/FLINK-21842
             Project: Flink
          Issue Type: Improvement
          Components: API / Python
            Reporter: Wei Zhong
            Assignee: Wei Zhong


Currently the Python DataStream API still not support user defined window. We need to support it firstly.



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