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https://issues.apache.org/jira/browse/SPARK-4303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-4303.
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Resolution: Duplicate
I think this is an exact duplicate of
https://issues.apache.org/jira/browse/SPARK-2465. See the discussion about why
this won't be committed in the foreseeable future. I agree there are some
arguments for long but fair enough there are downsides too.
> [MLLIB] Use "Long" IDs instead of "Int" in ALS.Rating class
> -----------------------------------------------------------
>
> Key: SPARK-4303
> URL: https://issues.apache.org/jira/browse/SPARK-4303
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Jia Xu
>
> In many big data recommendation applications, the IDs used for "users" and
> "products" are usually Long type instead of Integer.
> So a Rating class based on Long IDs should be more useful for these
> applications.
> i.e. case class Rating(val user: Long, val product: Long, val rating: Double)
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