[jira] [Created] (SPARK-17169) To use scala macros to update code when SharedParamsCodeGen.scala changed

["Qian Huang (JIRA)" <ji...@apache.org>]

Qian Huang created SPARK-17169:
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             Summary: 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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