854f30ffa8
### What changes were proposed in this pull request? use `ml.Summarizer` instead of `mllib.MultivariateOnlineSummarizer` ### Why are the changes needed? 1, I found that using `ml.Summarizer` is faster than current impl; 2, `mllib.MultivariateOnlineSummarizer` maintain all arrays, while `ml.Summarizer` only maintain necessary arrays 3, using `ml.Summarizer` will avoid vector conversions to `mlllib.Vector` ### Does this PR introduce any user-facing change? No ### How was this patch tested? existing testsuites Closes #26393 from zhengruifeng/maxabs_opt. Authored-by: zhengruifeng <ruifengz@foxmail.com> Signed-off-by: Sean Owen <sean.owen@databricks.com> |
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