Github user keypointt commented on the issue:
https://github.com/apache/spark/pull/14447
hi @yanboliang I just tried formula `Species ~ Sepal_Length + Sepal_Width +
Petal_Length + Petal_Width`, but still not working with msg
```
> model <- spark.mlp(irisDF, Species ~ Sepal_Length + Sepal_Width +
Petal_Length + Petal_Width, blockSize=128, initialWeights=seq(1, 9, by = 2),
layers=3, solver='LBFGS', seed=1234L, maxIter=100, tol=0.5, stepSize=1)
16/08/02 10:21:48 ERROR RBackendHandler: fit on
org.apache.spark.ml.r.MultilayerPerceptronClassifierWrapper failed
Error in invokeJava(isStatic = TRUE, className, methodName, ...) :
In addition: Warning message:
In if (is.na(object)) { :
the condition has length > 1 and only the first element will be used
```
Do you mind tell me how did you debug it? I'd like to debug by steps but
don't know how, thanks a lot
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