[SPARK-13928] Move org.apache.spark.Logging into org.apache.spark.internal.Logging

## What changes were proposed in this pull request?

Logging was made private in Spark 2.0. If we move it, then users would be able to create a Logging trait themselves to avoid changing their own code.

## How was this patch tested?

existing tests.

Author: Wenchen Fan <wenchen@databricks.com>

Closes #11764 from cloud-fan/logger.

5 files changed, 10 insertions, 6 deletions

diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorIndexerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorIndexerSuite.scala
index d4f836ef33..1ffc62b38e 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorIndexerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorIndexerSuite.scala
@@ -19,7 +19,8 @@ package org.apache.spark.ml.feature
 
 import scala.beans.{BeanInfo, BeanProperty}
 
-import org.apache.spark.{Logging, SparkException, SparkFunSuite}
+import org.apache.spark.{SparkException, SparkFunSuite}
+import org.apache.spark.internal.Logging
 import org.apache.spark.ml.attribute._
 import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
diff --git a/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
index 2bedd70ce9..dac76aa7a1 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
@@ -25,7 +25,8 @@ import scala.language.existentials
 
 import com.github.fommil.netlib.BLAS.{getInstance => blas}
 
-import org.apache.spark.{Logging, SparkException, SparkFunSuite}
+import org.apache.spark.{SparkException, SparkFunSuite}
+import org.apache.spark.internal.Logging
 import org.apache.spark.ml.recommendation.ALS._
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
 import org.apache.spark.mllib.linalg.Vectors
@@ -33,7 +34,6 @@ import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.rdd.RDD
 import org.apache.spark.sql.{DataFrame, Row}
-import org.apache.spark.util.Utils
 
 class ALSSuite
   extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest with Logging {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
index 832ccc0aac..e5567492a2 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
@@ -22,7 +22,8 @@ import scala.util.Random
 import breeze.linalg.{squaredDistance => breezeSquaredDistance, DenseMatrix => BDM}
 import org.json4s.jackson.JsonMethods.{parse => parseJson}
 
-import org.apache.spark.{Logging, SparkException, SparkFunSuite}
+import org.apache.spark.{SparkException, SparkFunSuite}
+import org.apache.spark.internal.Logging
 import org.apache.spark.mllib.util.TestingUtils._
 
 class VectorsSuite extends SparkFunSuite with Logging {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/stat/CorrelationSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/stat/CorrelationSuite.scala
index c3eeda0125..eaa819c2e6 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/stat/CorrelationSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/stat/CorrelationSuite.scala
@@ -19,7 +19,8 @@ package org.apache.spark.mllib.stat
 
 import breeze.linalg.{DenseMatrix => BDM, Matrix => BM}
 
-import org.apache.spark.{Logging, SparkFunSuite}
+import org.apache.spark.SparkFunSuite
+import org.apache.spark.internal.Logging
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.stat.correlation.{Correlations, PearsonCorrelation,
   SpearmanCorrelation}
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
index acb3b953b5..58828b3af9 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
@@ -17,7 +17,8 @@
 
 package org.apache.spark.mllib.tree
 
-import org.apache.spark.{Logging, SparkFunSuite}
+import org.apache.spark.SparkFunSuite
+import org.apache.spark.internal.Logging
 import org.apache.spark.mllib.regression.LabeledPoint
 import org.apache.spark.mllib.tree.configuration.{BoostingStrategy, Strategy}
 import org.apache.spark.mllib.tree.configuration.Algo._