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Posted to issues@flink.apache.org by "Roman Khachatryan (Jira)" <ji...@apache.org> on 2026/05/22 22:22:00 UTC

[jira] [Created] (FLINK-39740) LinkedMultiSetState updates highestSqnAndSizeState unconditionally

Roman Khachatryan created FLINK-39740:
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             Summary: LinkedMultiSetState updates highestSqnAndSizeState unconditionally
                 Key: FLINK-39740
                 URL: https://issues.apache.org/jira/browse/FLINK-39740
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Runtime
    Affects Versions: 2.3.0
            Reporter: Roman Khachatryan
            Assignee: Roman Khachatryan


In LinkedMultiSetState, highestSqnAndSizeState tracks the highest SQN. It grows monotinically and is used when linking rows in a double-linked list.

To preserve monotonicity, it should only be incremented on new rows.
However, it is currently updated (to a lower value) when a row is replaced, breaking the invariant.
Linking of the next row added will be broken.



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