[SPARK-21245] Resolve code duplication for classification/regression summarizers

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Affects Version/s: 2.2.2
• Component/s: ML
• Labels: bulk-closed starter
• Assignee: Unassigned
• Reporter: Seth Hendrickson
• Created: 28/Jun/17 18:16
• Updated: 28/Jan/20 00:06
• Resolved: 21/May/19 04:13

Description

In several places (LogReg, LinReg, SVC) in Spark ML, we collect summary information about training data using MultivariateOnlineSummarizer and MulticlassSummarizer. We have the same code appearing in several places (and including test suites). We can eliminate this by creating a common implementation somewhere.

Issue Links

• links to: [Github] Pull Request #18898 (bravo-zhang)
• links to: GitHub Pull Request #18898