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| author | Yanbo Liang <ybliang8@gmail.com> | 2016-11-13 20:25:12 -0800 |
|---|---|---|
| committer | Yanbo Liang <ybliang8@gmail.com> | 2016-11-13 20:25:12 -0800 |
| commit | 07be232ea12dfc8dc3701ca948814be7dbebf4ee (patch) | |
| tree | 856a17d84397a6205c6cc5c83c25c8cdfe09d21b /assembly/pom.xml | |
| parent | b91a51bb231af321860415075a7f404bc46e0a74 (diff) | |
| download | spark-07be232ea12dfc8dc3701ca948814be7dbebf4ee.tar.gz spark-07be232ea12dfc8dc3701ca948814be7dbebf4ee.tar.bz2 spark-07be232ea12dfc8dc3701ca948814be7dbebf4ee.zip | |
[SPARK-18412][SPARKR][ML] Fix exception for some SparkR ML algorithms training on libsvm data
## 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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