diff options
Diffstat (limited to 'examples')
9 files changed, 83 insertions, 8 deletions
diff --git a/examples/src/main/java/org/apache/spark/examples/JavaHdfsLR.java b/examples/src/main/java/org/apache/spark/examples/JavaHdfsLR.java index 6c177de359..31a79ddd3f 100644 --- a/examples/src/main/java/org/apache/spark/examples/JavaHdfsLR.java +++ b/examples/src/main/java/org/apache/spark/examples/JavaHdfsLR.java @@ -30,12 +30,25 @@ import java.util.regex.Pattern; /** * Logistic regression based classification. + * + * This is an example implementation for learning how to use Spark. For more conventional use, + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ public final class JavaHdfsLR { private static final int D = 10; // Number of dimensions private static final Random rand = new Random(42); + static void showWarning() { + String warning = "WARN: This is a naive implementation of Logistic Regression " + + "and is given as an example!\n" + + "Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD " + + "or org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS " + + "for more conventional use."; + System.err.println(warning); + } + static class DataPoint implements Serializable { DataPoint(double[] x, double y) { this.x = x; @@ -109,6 +122,8 @@ public final class JavaHdfsLR { System.exit(1); } + showWarning(); + SparkConf sparkConf = new SparkConf().setAppName("JavaHdfsLR"); JavaSparkContext sc = new JavaSparkContext(sparkConf); JavaRDD<String> lines = sc.textFile(args[0]); diff --git a/examples/src/main/java/org/apache/spark/examples/JavaPageRank.java b/examples/src/main/java/org/apache/spark/examples/JavaPageRank.java index c22506491f..a5db8accdf 100644 --- a/examples/src/main/java/org/apache/spark/examples/JavaPageRank.java +++ b/examples/src/main/java/org/apache/spark/examples/JavaPageRank.java @@ -45,10 +45,21 @@ import java.util.regex.Pattern; * URL neighbor URL * ... * where URL and their neighbors are separated by space(s). + * + * This is an example implementation for learning how to use Spark. For more conventional use, + * please refer to org.apache.spark.graphx.lib.PageRank */ public final class JavaPageRank { private static final Pattern SPACES = Pattern.compile("\\s+"); + static void showWarning() { + String warning = "WARN: This is a naive implementation of PageRank " + + "and is given as an example! \n" + + "Please use the PageRank implementation found in " + + "org.apache.spark.graphx.lib.PageRank for more conventional use."; + System.err.println(warning); + } + private static class Sum implements Function2<Double, Double, Double> { @Override public Double call(Double a, Double b) { @@ -62,6 +73,8 @@ public final class JavaPageRank { System.exit(1); } + showWarning(); + SparkConf sparkConf = new SparkConf().setAppName("JavaPageRank"); JavaSparkContext ctx = new JavaSparkContext(sparkConf); diff --git a/examples/src/main/python/pagerank.py b/examples/src/main/python/pagerank.py index b539c4128c..a5f25d78c1 100755 --- a/examples/src/main/python/pagerank.py +++ b/examples/src/main/python/pagerank.py @@ -15,6 +15,11 @@ # limitations under the License. # +""" +This is an example implementation of PageRank. For more conventional use, +Please refer to PageRank implementation provided by graphx +""" + import re import sys from operator import add @@ -40,6 +45,9 @@ if __name__ == "__main__": print >> sys.stderr, "Usage: pagerank <file> <iterations>" exit(-1) + print >> sys.stderr, """WARN: This is a naive implementation of PageRank and is + given as an example! Please refer to PageRank implementation provided by graphx""" + # Initialize the spark context. sc = SparkContext(appName="PythonPageRank") diff --git a/examples/src/main/scala/org/apache/spark/examples/LocalFileLR.scala b/examples/src/main/scala/org/apache/spark/examples/LocalFileLR.scala index 931faac546..ac2ea35bbd 100644 --- a/examples/src/main/scala/org/apache/spark/examples/LocalFileLR.scala +++ b/examples/src/main/scala/org/apache/spark/examples/LocalFileLR.scala @@ -25,7 +25,8 @@ import breeze.linalg.{Vector, DenseVector} * Logistic regression based classification. * * This is an example implementation for learning how to use Spark. For more conventional use, - * please refer to org.apache.spark.mllib.classification.LogisticRegression + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ object LocalFileLR { val D = 10 // Numer of dimensions @@ -41,7 +42,8 @@ object LocalFileLR { def showWarning() { System.err.println( """WARN: This is a naive implementation of Logistic Regression and is given as an example! - |Please use the LogisticRegression method found in org.apache.spark.mllib.classification + |Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + |org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS |for more conventional use. """.stripMargin) } diff --git a/examples/src/main/scala/org/apache/spark/examples/LocalLR.scala b/examples/src/main/scala/org/apache/spark/examples/LocalLR.scala index 2d75b9d259..92a683ad57 100644 --- a/examples/src/main/scala/org/apache/spark/examples/LocalLR.scala +++ b/examples/src/main/scala/org/apache/spark/examples/LocalLR.scala @@ -25,7 +25,8 @@ import breeze.linalg.{Vector, DenseVector} * Logistic regression based classification. * * This is an example implementation for learning how to use Spark. For more conventional use, - * please refer to org.apache.spark.mllib.classification.LogisticRegression + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ object LocalLR { val N = 10000 // Number of data points @@ -48,7 +49,8 @@ object LocalLR { def showWarning() { System.err.println( """WARN: This is a naive implementation of Logistic Regression and is given as an example! - |Please use the LogisticRegression method found in org.apache.spark.mllib.classification + |Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + |org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS |for more conventional use. """.stripMargin) } diff --git a/examples/src/main/scala/org/apache/spark/examples/SparkHdfsLR.scala b/examples/src/main/scala/org/apache/spark/examples/SparkHdfsLR.scala index 3258510894..9099c2fcc9 100644 --- a/examples/src/main/scala/org/apache/spark/examples/SparkHdfsLR.scala +++ b/examples/src/main/scala/org/apache/spark/examples/SparkHdfsLR.scala @@ -32,7 +32,8 @@ import org.apache.spark.scheduler.InputFormatInfo * Logistic regression based classification. * * This is an example implementation for learning how to use Spark. For more conventional use, - * please refer to org.apache.spark.mllib.classification.LogisticRegression + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ object SparkHdfsLR { val D = 10 // Numer of dimensions @@ -54,7 +55,8 @@ object SparkHdfsLR { def showWarning() { System.err.println( """WARN: This is a naive implementation of Logistic Regression and is given as an example! - |Please use the LogisticRegression method found in org.apache.spark.mllib.classification + |Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + |org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS |for more conventional use. """.stripMargin) } diff --git a/examples/src/main/scala/org/apache/spark/examples/SparkLR.scala b/examples/src/main/scala/org/apache/spark/examples/SparkLR.scala index fc23308fc4..257a7d29f9 100644 --- a/examples/src/main/scala/org/apache/spark/examples/SparkLR.scala +++ b/examples/src/main/scala/org/apache/spark/examples/SparkLR.scala @@ -30,7 +30,8 @@ import org.apache.spark._ * Usage: SparkLR [slices] * * This is an example implementation for learning how to use Spark. For more conventional use, - * please refer to org.apache.spark.mllib.classification.LogisticRegression + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ object SparkLR { val N = 10000 // Number of data points @@ -53,7 +54,8 @@ object SparkLR { def showWarning() { System.err.println( """WARN: This is a naive implementation of Logistic Regression and is given as an example! - |Please use the LogisticRegression method found in org.apache.spark.mllib.classification + |Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + |org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS |for more conventional use. """.stripMargin) } diff --git a/examples/src/main/scala/org/apache/spark/examples/SparkPageRank.scala b/examples/src/main/scala/org/apache/spark/examples/SparkPageRank.scala index 4c7e006da0..8d092b6506 100644 --- a/examples/src/main/scala/org/apache/spark/examples/SparkPageRank.scala +++ b/examples/src/main/scala/org/apache/spark/examples/SparkPageRank.scala @@ -28,13 +28,28 @@ import org.apache.spark.{SparkConf, SparkContext} * URL neighbor URL * ... * where URL and their neighbors are separated by space(s). + * + * This is an example implementation for learning how to use Spark. For more conventional use, + * please refer to org.apache.spark.graphx.lib.PageRank */ object SparkPageRank { + + def showWarning() { + System.err.println( + """WARN: This is a naive implementation of PageRank and is given as an example! + |Please use the PageRank implementation found in org.apache.spark.graphx.lib.PageRank + |for more conventional use. + """.stripMargin) + } + def main(args: Array[String]) { if (args.length < 1) { System.err.println("Usage: SparkPageRank <file> <iter>") System.exit(1) } + + showWarning() + val sparkConf = new SparkConf().setAppName("PageRank") val iters = if (args.length > 0) args(1).toInt else 10 val ctx = new SparkContext(sparkConf) diff --git a/examples/src/main/scala/org/apache/spark/examples/SparkTachyonHdfsLR.scala b/examples/src/main/scala/org/apache/spark/examples/SparkTachyonHdfsLR.scala index 96d13612e4..4393b99e63 100644 --- a/examples/src/main/scala/org/apache/spark/examples/SparkTachyonHdfsLR.scala +++ b/examples/src/main/scala/org/apache/spark/examples/SparkTachyonHdfsLR.scala @@ -32,11 +32,24 @@ import org.apache.spark.storage.StorageLevel /** * Logistic regression based classification. * This example uses Tachyon to persist rdds during computation. + * + * This is an example implementation for learning how to use Spark. For more conventional use, + * please refer to either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + * org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS based on your needs. */ object SparkTachyonHdfsLR { val D = 10 // Numer of dimensions val rand = new Random(42) + def showWarning() { + System.err.println( + """WARN: This is a naive implementation of Logistic Regression and is given as an example! + |Please use either org.apache.spark.mllib.classification.LogisticRegressionWithSGD or + |org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS + |for more conventional use. + """.stripMargin) + } + case class DataPoint(x: Vector[Double], y: Double) def parsePoint(line: String): DataPoint = { @@ -51,6 +64,9 @@ object SparkTachyonHdfsLR { } def main(args: Array[String]) { + + showWarning() + val inputPath = args(0) val sparkConf = new SparkConf().setAppName("SparkTachyonHdfsLR") val conf = new Configuration() |