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Posted to dev@flink.apache.org by "Xuannan Su (Jira)" <ji...@apache.org> on 2022/09/08 09:22:00 UTC

[jira] [Created] (FLINK-29231) PyFlink udtaf produces different results in the same sliding window

Xuannan Su created FLINK-29231:
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             Summary: PyFlink udtaf produces different results in the same sliding window
                 Key: FLINK-29231
                 URL: https://issues.apache.org/jira/browse/FLINK-29231
             Project: Flink
          Issue Type: Bug
          Components: API / Python
    Affects Versions: 1.15.2
            Reporter: Xuannan Su
         Attachments: image-2022-09-08-17-20-06-296.png, input, test_agg.py

It seems that PyFlink udtaf produces different results in the same sliding window. It can be reproduced with the given code and input. It is not always happening but the possibility is relatively high.

The incorrect output is the following:

!image-2022-09-08-17-20-06-296.png!

 

We can see that the output contains different `val_sum` at `window_time` 2022-01-01 00:01:59.999.



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