From ac9c0672377e9f5e8ebd8aabf436e2f9dee905a6 Mon Sep 17 00:00:00 2001
From: Zheng RuiFeng <ruifengz@foxmail.com>
Date: Fri, 30 Sep 2016 14:21:01 +0800
Subject: [PATCH] create pr

---
 .../scala/org/apache/spark/ml/feature/LabeledPoint.scala     | 2 +-
 .../org/apache/spark/ml/feature/QuantileDiscretizer.scala    | 2 +-
 .../src/main/scala/org/apache/spark/ml/python/MLSerDe.scala  | 5 -----
 .../scala/org/apache/spark/ml/regression/GBTRegressor.scala  | 2 +-
 .../org/apache/spark/ml/regression/LinearRegression.scala    | 1 -
 python/pyspark/ml/classification.py                          | 1 -
 6 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/mllib/src/main/scala/org/apache/spark/ml/feature/LabeledPoint.scala b/mllib/src/main/scala/org/apache/spark/ml/feature/LabeledPoint.scala
index 6cefa7086c881..7d8e4adcc2259 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/feature/LabeledPoint.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/feature/LabeledPoint.scala
@@ -25,7 +25,7 @@ import org.apache.spark.ml.linalg.Vector
 /**
  * :: Experimental ::
  *
- * Class that represents the features and labels of a data point.
+ * Class that represents the features and label of a data point.
  *
  * @param label Label for this data point.
  * @param features List of features for this data point.
diff --git a/mllib/src/main/scala/org/apache/spark/ml/feature/QuantileDiscretizer.scala b/mllib/src/main/scala/org/apache/spark/ml/feature/QuantileDiscretizer.scala
index 1e59d71a70955..05e034d90f6a3 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/feature/QuantileDiscretizer.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/feature/QuantileDiscretizer.scala
@@ -25,7 +25,7 @@ import org.apache.spark.ml.param._
 import org.apache.spark.ml.param.shared.{HasInputCol, HasOutputCol}
 import org.apache.spark.ml.util._
 import org.apache.spark.sql.Dataset
-import org.apache.spark.sql.types.{DoubleType, StructType}
+import org.apache.spark.sql.types.StructType
 
 /**
  * Params for [[QuantileDiscretizer]].
diff --git a/mllib/src/main/scala/org/apache/spark/ml/python/MLSerDe.scala b/mllib/src/main/scala/org/apache/spark/ml/python/MLSerDe.scala
index 4b805e145482a..da62f8518e363 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/python/MLSerDe.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/python/MLSerDe.scala
@@ -19,17 +19,12 @@ package org.apache.spark.ml.python
 
 import java.io.OutputStream
 import java.nio.{ByteBuffer, ByteOrder}
-import java.util.{ArrayList => JArrayList}
-
-import scala.collection.JavaConverters._
 
 import net.razorvine.pickle._
 
-import org.apache.spark.api.java.JavaRDD
 import org.apache.spark.api.python.SerDeUtil
 import org.apache.spark.ml.linalg._
 import org.apache.spark.mllib.api.python.SerDeBase
-import org.apache.spark.rdd.RDD
 
 /**
  * SerDe utility functions for pyspark.ml.
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
index ce355938ec1c7..bb01f9d5a364c 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/GBTRegressor.scala
@@ -21,7 +21,7 @@ import com.github.fommil.netlib.BLAS.{getInstance => blas}
 import org.json4s.{DefaultFormats, JObject}
 import org.json4s.JsonDSL._
 
-import org.apache.spark.annotation.{Experimental, Since}
+import org.apache.spark.annotation.Since
 import org.apache.spark.internal.Logging
 import org.apache.spark.ml.{PredictionModel, Predictor}
 import org.apache.spark.ml.feature.LabeledPoint
diff --git a/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala b/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala
index 7fddfd9b10f84..536c58f998080 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala
@@ -37,7 +37,6 @@ import org.apache.spark.ml.param.ParamMap
 import org.apache.spark.ml.param.shared._
 import org.apache.spark.ml.util._
 import org.apache.spark.mllib.evaluation.RegressionMetrics
-import org.apache.spark.mllib.linalg.{Vectors => OldVectors}
 import org.apache.spark.mllib.linalg.VectorImplicits._
 import org.apache.spark.mllib.stat.MultivariateOnlineSummarizer
 import org.apache.spark.mllib.util.MLUtils
diff --git a/python/pyspark/ml/classification.py b/python/pyspark/ml/classification.py
index 505e7bffd1763..ea60fab029582 100644
--- a/python/pyspark/ml/classification.py
+++ b/python/pyspark/ml/classification.py
@@ -16,7 +16,6 @@
 #
 
 import operator
-import warnings
 
 from pyspark import since, keyword_only
 from pyspark.ml import Estimator, Model