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

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Component/s: ML
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Qian Huang
• Created: 20/Aug/16 12:13
• Updated: 12/Dec/22 18:10
• Resolved: 21/May/19 04:15

Description

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.