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https://issues.apache.org/jira/browse/SPARK-15027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15265229#comment-15265229
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Xiangrui Meng commented on SPARK-15027:
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No, just API change. I guess there are still gaps to use DataFrame for the
implementation. Maybe this is not urgent for 2.0 since ALS.train is a developer
API.
> ALS.train should use DataFrame instead of RDD
> ---------------------------------------------
>
> Key: SPARK-15027
> URL: https://issues.apache.org/jira/browse/SPARK-15027
> Project: Spark
> Issue Type: Improvement
> Components: ML, PySpark
> Affects Versions: 2.0.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> We should also update `ALS.train` to use `Dataset/DataFrame` instead of `RDD`
> to be consistent with other APIs under spark.ml and it also leaves space for
> Tungsten-based optimization.
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