Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/8675#discussion_r39671227
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala
---
@@ -191,6 +191,10 @@ class LogisticRegressionSuite extends SparkFunSuite
with MLlibTestSparkContext {
val model = lr.fit(dataset)
assert(model.numClasses === 2)
+ val datasetFeatureSize = dataset.rdd.first() match {
--- End diff --
You shouldn't assume a column ordering. Instead:
```
dataset.select("features").first().getAs[Vector](0).size
```
or
```
dataset.select("features").first() match {
case features: Vector => features.size
}
```
(same issue in other test suites)
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