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https://issues.apache.org/jira/browse/SPARK-17169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15798989#comment-15798989
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Joseph K. Bradley commented on SPARK-17169:
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Is this worthwhile? A lot of developers aren't familiar with Scala macros, and
macros can get pretty obscure if we're not careful.
> To use scala macros to update code when SharedParamsCodeGen.scala changed
> -------------------------------------------------------------------------
>
> Key: SPARK-17169
> URL: https://issues.apache.org/jira/browse/SPARK-17169
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Qian Huang
> Priority: Minor
>
> As commented in the file SharedParamsCodeGen.scala, we have to manually run
> build/sbt "mllib/runMain org.apache.spark.ml.param.shared.SharedParamsCodeGen"
> to generate and update it.
> It could be better to do compile time code-gen for this using scala macros
> rather than running the script as described above.
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