Keepun created SPARK-23471:
------------------------------
Summary: RandomForestClassificationModel save() - incorrect
metadata
Key: SPARK-23471
URL: https://issues.apache.org/jira/browse/SPARK-23471
Project: Spark
Issue Type: Bug
Components: ML
Affects Versions: 2.2.1
Reporter: Keepun
RandomForestClassificationMode.load() does not work after save():
{code:java}
RandomForestClassifier rf = new RandomForestClassifier()
.setFeaturesCol("features")
.setLabelCol("result")
.setNumTrees(100)
.setMaxDepth(30)
.setMinInstancesPerNode(1)
//.setCacheNodeIds(true)
.setMaxMemoryInMB(500)
.setSeed(System.currentTimeMillis() + System.nanoTime());
RandomForestClassificationModel rfmodel = rf.train(data);
try {
rfmodel.save(args[2] + "." + System.currentTimeMillis());
} catch (IOException e) {
LOG.error(e.getMessage(), e);
e.printStackTrace();
}
{code}
File metadata\part-00000:
{code:java}
{"class":"org.apache.spark.ml.classification.RandomForestClassificationModel",
"timestamp":1519136783983,"sparkVersion":"2.2.1","uid":"rfc_7c7e84ce7488",
"paramMap":{"featureSubsetStrategy":"auto","cacheNodeIds":false,"impurity":"gini",
"checkpointInterval":10,
"numTrees":20,"maxDepth":5,
"probabilityCol":"probability","labelCol":"label","featuresCol":"features",
"maxMemoryInMB":256,"minInstancesPerNode":1,"subsamplingRate":1.0,
"rawPredictionCol":"rawPrediction","predictionCol":"prediction","maxBins":32,
"minInfoGain":0.0,"seed":-491520797},"numFeatures":1354,"numClasses":2,
"numTrees":20}
{code}
should be:
{code:java}
"numTrees":100,"maxDepth":30,{code}
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