Github user yanboliang commented on the issue:
https://github.com/apache/spark/pull/18797
@srowen @WeichenXu123
It make sense to remove the datum with label 0, as we compute
```log(label)``` which may lead to ```-Infinity``` and eventually causes the
error. Thanks for catching this.
BTW, what do you think add check when fitting the AFT survival regression
model?
```
def add(data: AFTPoint): this.type = {
val xi = data.features
val ti = data.label
val delta = data.censor
require(ti > 0.0, "The lifetime or label should be greater than 0.")
......
}
```
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