Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/17478
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GitHub user wangmiao1981 opened a pull request:
https://github.com/apache/spark/pull/17478
[SPARK-18901][ML]:Require in LR LogisticAggregator is redundant
## What changes were proposed in this pull request?
In MultivariateOnlineSummarizer,
`add` and `merge` have ch
