Github user dbtsai commented on the issue: https://github.com/apache/spark/pull/11119 I was also thinking that most of people will use this for daily retraining by passing in the previous model which will cause the model larger and larger due to the model chain which is unnecessary as @MLnick's point. Depending on what we decide to override, if we only override `k` and `centroids` for k means or `coefficients` for LoR, should we just keep them in the returning model without having the information as full `initialModel`? Or we just simply cut the lineage?
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