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   ([#122558](https://github.com/kubernetes/kubernetes/pull/122558), [@linxiulei](https://github.com/linxiulei))

- Fixed `threadSafeMap` high memory usage caused by indices that have churn of high-cardinality keys. E.g. namespaces ([#88005](https://github.com/kubernetes/kubernetes/pull/88005), [@patrickshan](https://github.com/patrickshan)) [SIG API Machinery]

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