[I] Support safe identity-changing CDC updates [hugegraph-toolchain]

["imbajin (via GitHub)" <gi...@apache.org>]

imbajin opened a new issue, #793:
URL: https://github.com/apache/hugegraph-toolchain/issues/793

   CDC UPDATE events can change a vertex ID or an edge identity (endpoints or sort keys). Deleting the old element before submitting its replacement can lose valid data when Server rejects the new element; deleting a vertex also removes its incident edges.
   
   #786 limits UPDATE to unchanged identities and rejects identity changes before any graph mutation. This issue tracks safe support for identity migration separately from the Java 17 upgrade.
   
   The follow-up needs to define and verify:
   
   - Atomic replacement or a complete failure/compensation contract, including incident edges.
   - UNIQUE value transfer when the old element still owns the value.
   - Retry and checkpoint recovery after creation or cleanup partially succeeds.
   - Vertex and edge identity changes, multiple mappings per event, and rejection by Server constraints.
   
   Creating first alone does not cover UNIQUE conflicts or cleanup failures. Keep the explicit rejection until these behaviors have a documented implementation and real Server validation.
   


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Re: [I] Support safe identity-changing CDC updates [hugegraph-toolchain]

["github-actions[bot] (via GitHub)" <gi...@apache.org>]

github-actions[bot] commented on issue #793:
URL: https://github.com/apache/hugegraph-toolchain/issues/793#issuecomment-6403205129

   Due to the lack of activity, the current issue is marked as stale and will be closed after 20 days, any update will remove the stale label


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