[SPARK-30802] Use Summarizer instead of MultivariateOnlineSummarizer in Aggregator test suite

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: ML
• Assignee: Huaxin Gao
• Reporter: Huaxin Gao
• Created: 12/Feb/20 21:53
• Updated: 19/Feb/20 23:43
• Resolved: 19/Feb/20 23:31

Description

Similar to https://issues.apache.org/jira/browse/SPARK-29754, we can use Summarizer instead of MultivariateOnlineSummarizer in Aggregator test suite. Also, we should use common code to minimize code duplication. 

Issue Links

• links to: GitHub Pull Request #27555