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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