[jira] [Created] (FLINK-40324) Append-only should stay unmaterialized without an ON CONFLICT clause

["Gustavo de Morais (Jira)" <ji...@apache.org>]

Gustavo de Morais created FLINK-40324:
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             Summary: Append-only should stay unmaterialized without an ON CONFLICT clause
                 Key: FLINK-40324
                 URL: https://issues.apache.org/jira/browse/FLINK-40324
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / API
    Affects Versions: 2.3.0
            Reporter: Gustavo de Morais
            Assignee: Gustavo de Morais


FLIP-558 dropped the inputInsertOnly guard in apache Flink, so insert-only input into a sink with a primary key now gains a SinkUpsertMaterializer and a keyed shuffle it never had. Reachable under upsert-materialize=AUTO with require-on-conflict=false, and under FORCE regardless. Released in 2.3.0, and require-on-conflict is documented as non breaking change which would make this a regression. 



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