diff --git a/core/src/main/scala/org/apache/spark/deploy/LocalSparkCluster.scala b/core/src/main/scala/org/apache/spark/deploy/LocalSparkCluster.scala
index 0401b15446a7b..3ab425aab84c8 100644
--- a/core/src/main/scala/org/apache/spark/deploy/LocalSparkCluster.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/LocalSparkCluster.scala
@@ -59,7 +59,7 @@ class LocalSparkCluster(
     /* Start the Workers */
     for (workerNum <- 1 to numWorkers) {
       val (workerSystem, _) = Worker.startSystemAndActor(localHostname, 0, 0, coresPerWorker,
-        memoryPerWorker, masters, null, Some(workerNum))
+        memoryPerWorker, masters, null, Some(workerNum), _conf)
       workerActorSystems += workerSystem
     }
 
diff --git a/core/src/main/scala/org/apache/spark/deploy/master/Master.scala b/core/src/main/scala/org/apache/spark/deploy/master/Master.scala
index 4584b730e3420..15814293227ab 100644
--- a/core/src/main/scala/org/apache/spark/deploy/master/Master.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/master/Master.scala
@@ -96,7 +96,7 @@ private[spark] class Master(
   val webUi = new MasterWebUI(this, webUiPort)
 
   val masterPublicAddress = {
-    val envVar = System.getenv("SPARK_PUBLIC_DNS")
+    val envVar = conf.getenv("SPARK_PUBLIC_DNS")
     if (envVar != null) envVar else host
   }
 
diff --git a/core/src/main/scala/org/apache/spark/deploy/worker/ExecutorRunner.scala b/core/src/main/scala/org/apache/spark/deploy/worker/ExecutorRunner.scala
index 066d46c4473eb..023f3c6269062 100644
--- a/core/src/main/scala/org/apache/spark/deploy/worker/ExecutorRunner.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/worker/ExecutorRunner.scala
@@ -44,6 +44,7 @@ private[spark] class ExecutorRunner(
     val workerId: String,
     val host: String,
     val webUiPort: Int,
+    val publicAddress: String,
     val sparkHome: File,
     val executorDir: File,
     val workerUrl: String,
@@ -140,7 +141,8 @@ private[spark] class ExecutorRunner(
       builder.environment.put("SPARK_LAUNCH_WITH_SCALA", "0")
 
       // Add webUI log urls
-      val baseUrl = s"http://$host:$webUiPort/logPage/?appId=$appId&executorId=$execId&logType="
+      val baseUrl =
+        s"http://$publicAddress:$webUiPort/logPage/?appId=$appId&executorId=$execId&logType="
       builder.environment.put("SPARK_LOG_URL_STDERR", s"${baseUrl}stderr")
       builder.environment.put("SPARK_LOG_URL_STDOUT", s"${baseUrl}stdout")
 
diff --git a/core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala b/core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala
index 2473a90aa9309..f2e7418f4bf15 100755
--- a/core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala
@@ -121,7 +121,7 @@ private[spark] class Worker(
   val shuffleService = new StandaloneWorkerShuffleService(conf, securityMgr)
 
   val publicAddress = {
-    val envVar = System.getenv("SPARK_PUBLIC_DNS")
+    val envVar = conf.getenv("SPARK_PUBLIC_DNS")
     if (envVar != null) envVar else host
   }
   var webUi: WorkerWebUI = null
@@ -362,7 +362,8 @@ private[spark] class Worker(
             self,
             workerId,
             host,
-            webUiPort,
+            webUi.boundPort,
+            publicAddress,
             sparkHome,
             executorDir,
             akkaUrl,
@@ -538,10 +539,10 @@ private[spark] object Worker extends Logging {
       memory: Int,
       masterUrls: Array[String],
       workDir: String,
-      workerNumber: Option[Int] = None): (ActorSystem, Int) = {
+      workerNumber: Option[Int] = None,
+      conf: SparkConf = new SparkConf): (ActorSystem, Int) = {
 
     // The LocalSparkCluster runs multiple local sparkWorkerX actor systems
-    val conf = new SparkConf
     val systemName = "sparkWorker" + workerNumber.map(_.toString).getOrElse("")
     val actorName = "Worker"
     val securityMgr = new SecurityManager(conf)
diff --git a/core/src/main/scala/org/apache/spark/ui/WebUI.scala b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
index 9be65a4a39a09..ec68837a1516c 100644
--- a/core/src/main/scala/org/apache/spark/ui/WebUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
@@ -47,7 +47,7 @@ private[spark] abstract class WebUI(
   protected val handlers = ArrayBuffer[ServletContextHandler]()
   protected var serverInfo: Option[ServerInfo] = None
   protected val localHostName = Utils.localHostName()
-  protected val publicHostName = Option(System.getenv("SPARK_PUBLIC_DNS")).getOrElse(localHostName)
+  protected val publicHostName = Option(conf.getenv("SPARK_PUBLIC_DNS")).getOrElse(localHostName)
   private val className = Utils.getFormattedClassName(this)
 
   def getBasePath: String = basePath
diff --git a/core/src/test/scala/org/apache/spark/deploy/JsonProtocolSuite.scala b/core/src/test/scala/org/apache/spark/deploy/JsonProtocolSuite.scala
index e955636cf5b59..68b5776fc6515 100644
--- a/core/src/test/scala/org/apache/spark/deploy/JsonProtocolSuite.scala
+++ b/core/src/test/scala/org/apache/spark/deploy/JsonProtocolSuite.scala
@@ -119,7 +119,7 @@ class JsonProtocolSuite extends FunSuite {
 
   def createExecutorRunner(): ExecutorRunner = {
     new ExecutorRunner("appId", 123, createAppDesc(), 4, 1234, null, "workerId", "host", 123,
-      new File("sparkHome"), new File("workDir"), "akka://worker",
+      "publicAddress", new File("sparkHome"), new File("workDir"), "akka://worker",
       new SparkConf, Seq("localDir"), ExecutorState.RUNNING)
   }
 
diff --git a/core/src/test/scala/org/apache/spark/deploy/LogUrlsStandaloneSuite.scala b/core/src/test/scala/org/apache/spark/deploy/LogUrlsStandaloneSuite.scala
index f33bdc73e40ac..54dd7c9c45c61 100644
--- a/core/src/test/scala/org/apache/spark/deploy/LogUrlsStandaloneSuite.scala
+++ b/core/src/test/scala/org/apache/spark/deploy/LogUrlsStandaloneSuite.scala
@@ -17,35 +17,69 @@
 
 package org.apache.spark.deploy
 
+import java.net.URL
+
 import scala.collection.mutable
+import scala.io.Source
 
-import org.scalatest.{BeforeAndAfter, FunSuite}
+import org.scalatest.FunSuite
 
 import org.apache.spark.scheduler.cluster.ExecutorInfo
 import org.apache.spark.scheduler.{SparkListenerExecutorAdded, SparkListener}
-import org.apache.spark.{SparkContext, LocalSparkContext}
+import org.apache.spark.{SparkConf, SparkContext, LocalSparkContext}
 
-class LogUrlsStandaloneSuite extends FunSuite with LocalSparkContext with BeforeAndAfter {
+class LogUrlsStandaloneSuite extends FunSuite with LocalSparkContext {
 
   /** Length of time to wait while draining listener events. */
-  val WAIT_TIMEOUT_MILLIS = 10000
+  private val WAIT_TIMEOUT_MILLIS = 10000
 
-  before {
+  test("verify that correct log urls get propagated from workers") {
     sc = new SparkContext("local-cluster[2,1,512]", "test")
+
+    val listener = new SaveExecutorInfo
+    sc.addSparkListener(listener)
+
+    // Trigger a job so that executors get added
+    sc.parallelize(1 to 100, 4).map(_.toString).count()
+
+    assert(sc.listenerBus.waitUntilEmpty(WAIT_TIMEOUT_MILLIS))
+    listener.addedExecutorInfos.values.foreach { info =>
+      assert(info.logUrlMap.nonEmpty)
+      // Browse to each URL to check that it's valid
+      info.logUrlMap.foreach { case (logType, logUrl) =>
+        val html = Source.fromURL(logUrl).mkString
+        assert(html.contains(s"$logType log page"))
+      }
+    }
   }
 
-  test("verify log urls get propagated from workers") {
+  test("verify that log urls reflect SPARK_PUBLIC_DNS (SPARK-6175)") {
+    val SPARK_PUBLIC_DNS = "public_dns"
+    class MySparkConf extends SparkConf(false) {
+      override def getenv(name: String) = {
+        if (name == "SPARK_PUBLIC_DNS") SPARK_PUBLIC_DNS
+        else super.getenv(name)
+      }
+
+      override def clone: SparkConf = {
+        new MySparkConf().setAll(getAll)
+      }
+    }
+    val conf = new MySparkConf()
+    sc = new SparkContext("local-cluster[2,1,512]", "test", conf)
+
     val listener = new SaveExecutorInfo
     sc.addSparkListener(listener)
 
-    val rdd1 = sc.parallelize(1 to 100, 4)
-    val rdd2 = rdd1.map(_.toString)
-    rdd2.setName("Target RDD")
-    rdd2.count()
+    // Trigger a job so that executors get added
+    sc.parallelize(1 to 100, 4).map(_.toString).count()
 
     assert(sc.listenerBus.waitUntilEmpty(WAIT_TIMEOUT_MILLIS))
     listener.addedExecutorInfos.values.foreach { info =>
       assert(info.logUrlMap.nonEmpty)
+      info.logUrlMap.values.foreach { logUrl =>
+        assert(new URL(logUrl).getHost === SPARK_PUBLIC_DNS)
+      }
     }
   }
 
diff --git a/core/src/test/scala/org/apache/spark/deploy/worker/ExecutorRunnerTest.scala b/core/src/test/scala/org/apache/spark/deploy/worker/ExecutorRunnerTest.scala
index 76511699e5ac5..6fca6321e5a1b 100644
--- a/core/src/test/scala/org/apache/spark/deploy/worker/ExecutorRunnerTest.scala
+++ b/core/src/test/scala/org/apache/spark/deploy/worker/ExecutorRunnerTest.scala
@@ -33,7 +33,7 @@ class ExecutorRunnerTest extends FunSuite {
     val appDesc = new ApplicationDescription("app name", Some(8), 500,
       Command("foo", Seq(appId), Map(), Seq(), Seq(), Seq()), "appUiUrl")
     val er = new ExecutorRunner(appId, 1, appDesc, 8, 500, null, "blah", "worker321", 123,
-      new File(sparkHome), new File("ooga"), "blah", new SparkConf, Seq("localDir"),
+      "publicAddr", new File(sparkHome), new File("ooga"), "blah", new SparkConf, Seq("localDir"),
       ExecutorState.RUNNING)
     val builder = CommandUtils.buildProcessBuilder(appDesc.command, 512, sparkHome, er.substituteVariables)
     assert(builder.command().last === appId)
diff --git a/mllib/src/main/scala/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.scala b/mllib/src/main/scala/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.scala
index ced042e2f96ca..c1d1a224817e8 100644
--- a/mllib/src/main/scala/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.scala
+++ b/mllib/src/main/scala/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.scala
@@ -22,6 +22,7 @@ import org.apache.spark.Logging
 import org.apache.spark.SparkContext._
 import org.apache.spark.mllib.evaluation.binary._
 import org.apache.spark.rdd.{RDD, UnionRDD}
+import org.apache.spark.sql.DataFrame
 
 /**
  * :: Experimental ::
@@ -53,6 +54,13 @@ class BinaryClassificationMetrics(
    */
   def this(scoreAndLabels: RDD[(Double, Double)]) = this(scoreAndLabels, 0)
 
+  /**
+   * An auxiliary constructor taking a DataFrame.
+   * @param scoreAndLabels a DataFrame with two double columns: score and label
+   */
+  private[mllib] def this(scoreAndLabels: DataFrame) =
+    this(scoreAndLabels.map(r => (r.getDouble(0), r.getDouble(1))))
+
   /** Unpersist intermediate RDDs used in the computation. */
   def unpersist() {
     cumulativeCounts.unpersist()
diff --git a/python/docs/pyspark.mllib.rst b/python/docs/pyspark.mllib.rst
index b706c5e376ef4..15101470afc07 100644
--- a/python/docs/pyspark.mllib.rst
+++ b/python/docs/pyspark.mllib.rst
@@ -16,6 +16,13 @@ pyspark.mllib.clustering module
     :members:
     :undoc-members:
 
+pyspark.mllib.evaluation module
+-------------------------------
+
+.. automodule:: pyspark.mllib.evaluation
+      :members:
+      :undoc-members:
+
 pyspark.mllib.feature module
 -------------------------------
 
diff --git a/python/pyspark/mllib/evaluation.py b/python/pyspark/mllib/evaluation.py
new file mode 100644
index 0000000000000..16cb49cc0cfff
--- /dev/null
+++ b/python/pyspark/mllib/evaluation.py
@@ -0,0 +1,83 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from pyspark.mllib.common import JavaModelWrapper
+from pyspark.sql import SQLContext
+from pyspark.sql.types import StructField, StructType, DoubleType
+
+
+class BinaryClassificationMetrics(JavaModelWrapper):
+    """
+    Evaluator for binary classification.
+
+    >>> scoreAndLabels = sc.parallelize([
+    ...     (0.1, 0.0), (0.1, 1.0), (0.4, 0.0), (0.6, 0.0), (0.6, 1.0), (0.6, 1.0), (0.8, 1.0)], 2)
+    >>> metrics = BinaryClassificationMetrics(scoreAndLabels)
+    >>> metrics.areaUnderROC()
+    0.70...
+    >>> metrics.areaUnderPR()
+    0.83...
+    >>> metrics.unpersist()
+    """
+
+    def __init__(self, scoreAndLabels):
+        """
+        :param scoreAndLabels: an RDD of (score, label) pairs
+        """
+        sc = scoreAndLabels.ctx
+        sql_ctx = SQLContext(sc)
+        df = sql_ctx.createDataFrame(scoreAndLabels, schema=StructType([
+            StructField("score", DoubleType(), nullable=False),
+            StructField("label", DoubleType(), nullable=False)]))
+        java_class = sc._jvm.org.apache.spark.mllib.evaluation.BinaryClassificationMetrics
+        java_model = java_class(df._jdf)
+        super(BinaryClassificationMetrics, self).__init__(java_model)
+
+    def areaUnderROC(self):
+        """
+        Computes the area under the receiver operating characteristic
+        (ROC) curve.
+        """
+        return self.call("areaUnderROC")
+
+    def areaUnderPR(self):
+        """
+        Computes the area under the precision-recall curve.
+        """
+        return self.call("areaUnderPR")
+
+    def unpersist(self):
+        """
+        Unpersists intermediate RDDs used in the computation.
+        """
+        self.call("unpersist")
+
+
+def _test():
+    import doctest
+    from pyspark import SparkContext
+    import pyspark.mllib.evaluation
+    globs = pyspark.mllib.evaluation.__dict__.copy()
+    globs['sc'] = SparkContext('local[4]', 'PythonTest')
+    (failure_count, test_count) = doctest.testmod(globs=globs, optionflags=doctest.ELLIPSIS)
+    globs['sc'].stop()
+    if failure_count:
+        exit(-1)
+
+
+if __name__ == "__main__":
+    _test()
diff --git a/python/run-tests b/python/run-tests
index a2c2f37a54eda..b7630c356cfae 100755
--- a/python/run-tests
+++ b/python/run-tests
@@ -75,6 +75,7 @@ function run_mllib_tests() {
     echo "Run mllib tests ..."
     run_test "pyspark/mllib/classification.py"
     run_test "pyspark/mllib/clustering.py"
+    run_test "pyspark/mllib/evaluation.py"
     run_test "pyspark/mllib/feature.py"
     run_test "pyspark/mllib/linalg.py"
     run_test "pyspark/mllib/rand.py"