[SPARK-12349] Make spark.ml PCAModel load backwards compatible

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: ML
• Target Version/s: 2.0.0
• Assignee: Sean R. Owen
• Reporter: Joseph K. Bradley
• Created: 15/Dec/15 23:42
• Updated: 29/Dec/15 11:56
• Resolved: 21/Dec/15 10:21

Description

SPARK-11530 introduced a new data member explainedVariance to spark.ml PCAModel and modified the save/load method. This method needs to be updated in order to load models saved with Spark 1.6.

Issue Links

• is related to: SPARK-11530 Return eigenvalues with PCA model
• links to: [Github] Pull Request #10327 (srowen)
• links to: [Github] Pull Request #10508 (srowen)