[SPARK-30376] Unify the computation of numFeatures

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: ML
• Assignee: Ruifeng Zheng
• Reporter: Ruifeng Zheng
• Created: 29/Dec/19 05:03
• Updated: 30/Dec/19 02:23
• Resolved: 30/Dec/19 02:23

Description

Try to extract numFeatures from metadata first, if do not exists, then extract from the dataset.

Issue Links

• links to: GitHub Pull Request #27037