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Posted to issues@flink.apache.org by "Yuan Kui (Jira)" <ji...@apache.org> on 2024/07/12 11:41:00 UTC

[jira] [Updated] (FLINK-35826) [SQL] Sliding window may produce unstable calculations when processing changelog data.

     [ https://issues.apache.org/jira/browse/FLINK-35826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yuan Kui updated FLINK-35826:
-----------------------------
    Description: 
Calculation results may be unstable when using a sliding window to process changelog data. Repeat the execution 10 times, the test results are partial success and partial failure:

!image-2024-07-12-14-27-58-061.png!

See the documentation and code for more details.

[https://docs.google.com/document/d/1JmwSLs4SJvZKe7kqALqVBZ-1F1OyPmiWw8J6Ug6vqW0/edit?usp=sharing]

code：

[[BUG] Reproduce the issue of unstable sliding window calculation results · yuchengxin/flink@c003e45 (github.com)|https://github.com/yuchengxin/flink/commit/c003e45082e0d1464111c286ac9c7abb79527492]

  was:
Calculation results may be unstable when using a sliding window to process changelog data. The test results are partial success and partial failure:

!image-2024-07-12-14-27-58-061.png!

See the documentation and code for more details.

[https://docs.google.com/document/d/1JmwSLs4SJvZKe7kqALqVBZ-1F1OyPmiWw8J6Ug6vqW0/edit?usp=sharing]

code：

[[BUG] Reproduce the issue of unstable sliding window calculation results · yuchengxin/flink@c003e45 (github.com)|https://github.com/yuchengxin/flink/commit/c003e45082e0d1464111c286ac9c7abb79527492]


> [SQL] Sliding window may produce unstable calculations when processing changelog data.
> --------------------------------------------------------------------------------------
>
>                 Key: FLINK-35826
>                 URL: https://issues.apache.org/jira/browse/FLINK-35826
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Planner
>    Affects Versions: 1.20.0
>         Environment: flink with release-1.20
>            Reporter: Yuan Kui
>            Assignee: xuyang
>            Priority: Major
>         Attachments: image-2024-07-12-14-27-58-061.png
>
>
> Calculation results may be unstable when using a sliding window to process changelog data. Repeat the execution 10 times, the test results are partial success and partial failure:
> !image-2024-07-12-14-27-58-061.png!
> See the documentation and code for more details.
> [https://docs.google.com/document/d/1JmwSLs4SJvZKe7kqALqVBZ-1F1OyPmiWw8J6Ug6vqW0/edit?usp=sharing]
> code：
> [[BUG] Reproduce the issue of unstable sliding window calculation results · yuchengxin/flink@c003e45 (github.com)|https://github.com/yuchengxin/flink/commit/c003e45082e0d1464111c286ac9c7abb79527492]



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