[SPARK-14472] Cleanup PySpark-ML Java wrapper classes so that JavaWrapper will inherit from JavaCallable

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: ML, PySpark
• Assignee: Bryan Cutler
• Reporter: Bryan Cutler
• Shepherd: Joseph K. Bradley
• Created: 07/Apr/16 23:20
• Updated: 13/Apr/16 21:09
• Resolved: 13/Apr/16 21:09

Description

Currently, JavaCallable is used to wrap a plain Java object and act as a mixin to JavaModel to provide a convenient method to make Java calls to an object defined in JavaWrapper. The inheritance structure could be simplified by defining the object in JavaCallable and use as a base class for JavaWrapper. Also, some renaming of these classes might better reflect their purpose.

Issue Links

• is related to: SPARK-13430 Expose ml summary function in PySpark for classification and regression models
• links to: [Github] Pull Request #12304 (BryanCutler)