Github user yu-iskw commented on the pull request:
https://github.com/apache/spark/pull/1964#issuecomment-53351219
Hi @erikerlandson,
I appriciate your example code.
I only use abs(v.toArray) in ChebyshevDistanceMetric.
But i didn't change in WeightedChebyshevDistanceMetric.
Because it can not modify in terms of negative weight(s).
```
- val diff = (v1 - v2).map(elm => Math.abs(elm)).:*(weights)
+ val diff = abs((v1 - v2).toArray) .:*(weights) // can not compile
+ val diff = abs(weights.:*(v1 - v2)) // fault result if weights has
negative value
```
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