Yanbo Liang created SPARK-15605:
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Summary: ML JavaDeveloperApiExample is broken
Key: SPARK-15605
URL: https://issues.apache.org/jira/browse/SPARK-15605
Project: Spark
Issue Type: Bug
Components: Examples, ML
Reporter: Yanbo Liang
Priority: Minor
This bug is reported by
http://apache-spark-developers-list.1001551.n3.nabble.com/Creation-of-SparkML-Estimators-in-Java-broken-td17710.html
.
This is because we do not have excellent coverage for Java-friendly wrappers.
I found we only implement JavaParams who is the wrappers of Scala Params.
We still need Java-friendly wrappers for other traits who extends from Scala
Params.
For example, in Scala we have:
trait HasLabelCol extends Params
We should have the Java-friendly wrappers as follows:
class JavaHasLabelCol extends JavaParams
Then each params of the Estimator will be generated correctly and param
validation will success.
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