Icysandwich opened a new pull request #26469: [SPARK-29844] Improper unpersist strategy in ml.recommendation.ASL.train URL: https://github.com/apache/spark/pull/26469 ### What changes were proposed in this pull request? Adjust improper unpersist timing on RDD. ### Why are the changes needed? Improper unpersist timing will result in memory waste ### Does this PR introduce any user-facing change? No ### How was this patch tested? Manually
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