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Yanbo Liang authored
## What changes were proposed in this pull request? * Fix the following exceptions which throws when ```spark.randomForest```(classification), ```spark.gbt```(classification), ```spark.naiveBayes``` and ```spark.glm```(binomial family) were fitted on libsvm data. ``` java.lang.IllegalArgumentException: requirement failed: If label column already exists, forceIndexLabel can not be set with true. ``` See [SPARK-18412](https://issues.apache.org/jira/browse/SPARK-18412) for more detail about how to reproduce this bug. * Refactor out ```getFeaturesAndLabels``` to RWrapperUtils, since lots of ML algorithm wrappers use this function. * Drop some unwanted columns when making prediction. ## How was this patch tested? Add unit test. Author: Yanbo Liang <ybliang8@gmail.com> Closes #15851 from yanboliang/spark-18412.
Yanbo Liang authored## What changes were proposed in this pull request? * Fix the following exceptions which throws when ```spark.randomForest```(classification), ```spark.gbt```(classification), ```spark.naiveBayes``` and ```spark.glm```(binomial family) were fitted on libsvm data. ``` java.lang.IllegalArgumentException: requirement failed: If label column already exists, forceIndexLabel can not be set with true. ``` See [SPARK-18412](https://issues.apache.org/jira/browse/SPARK-18412) for more detail about how to reproduce this bug. * Refactor out ```getFeaturesAndLabels``` to RWrapperUtils, since lots of ML algorithm wrappers use this function. * Drop some unwanted columns when making prediction. ## How was this patch tested? Add unit test. Author: Yanbo Liang <ybliang8@gmail.com> Closes #15851 from yanboliang/spark-18412.
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