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Posted to dev@flink.apache.org by "yux (Jira)" <ji...@apache.org> on 2024/07/05 06:11:00 UTC

[jira] [Created] (FLINK-35762) Cache hashCode for immutable map key classes

yux created FLINK-35762:
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             Summary: Cache hashCode for immutable map key classes
                 Key: FLINK-35762
                 URL: https://issues.apache.org/jira/browse/FLINK-35762
             Project: Flink
          Issue Type: Improvement
          Components: Flink CDC
            Reporter: yux


As suggested by [~kunni], hash code caching is a common optimization in Java world (for example, java.lang.String uses such optimization to reduce duplicate hash calculation since String as a hashmap key is quite common). Such optimization could be applied in CDC to optimize execution performance.



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