Github user zhengruifeng commented on the issue:
https://github.com/apache/spark/pull/17014
@WeichenXu123 Sounds good. And since adding `handlePersistence` as a
`ml.Param` may influences many algs (more than that in this PR), I think we may
need more discussion @MLnick @yanboliang
And if we add `handlePersistence`, should we also add a param
`intermediateStorageLevel` to let users choose the storagelevel (like
(ALS)[https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala#L216])?
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