[GitHub] spark pull request #19107: [SPARK-21799][ML] Fix `KMeans` performance regres...

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[GitHub] spark pull request #19107: [SPARK-21799][ML] Fix `KMeans` performance regres...

GitHub user WeichenXu123 opened a pull request: https://github.com/apache/spark/pull/19107 [SPARK-21799][ML] Fix `KMeans` performance regression caused by double-caching ## What changes were proposed in this pull request? Fix `KMeans` performance regression caused by