I want to make some minor modifications in the SparkMeans.scala so running the basic example won't do. I have also packed my code under a "jar" file with sbt. It completes successfully but when I try to run it : "java -jar myjar.jar" I get the same error: "Exception in thread "main" java.lang.NoClassDefFoundError: breeze/linalg/Vector at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2531) at java.lang.Class.getMethod0(Class.java:2774) at java.lang.Class.getMethod(Class.java:1663) at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486) "
If "scalac -d classes/ SparkKMeans.scala" can't see my classpath, why does it succeeds in compiling and does not give the same error ? The error itself "NoClassDefFoundError" means that the files are available at compile time, but for some reason I cannot figure out they are not available at run time. Does anyone know why ? Thank you On Tuesday, July 1, 2014 7:03 PM, Xiangrui Meng <men...@gmail.com> wrote: You can use either bin/run-example or bin/spark-summit to run example code. "scalac -d classes/ SparkKMeans.scala" doesn't recognize Spark classpath. There are examples in the official doc: http://spark.apache.org/docs/latest/quick-start.html#where-to-go-from-here -Xiangrui On Tue, Jul 1, 2014 at 4:39 AM, Wanda Hawk <wanda_haw...@yahoo.com> wrote: > Hello, > > I have installed spark-1.0.0 with scala2.10.3. I have built spark with > "sbt/sbt assembly" and added > "/home/wanda/spark-1.0.0/assembly/target/scala-2.10/spark-assembly-1.0.0-hadoop1.0.4.jar" > to my CLASSPATH variable. > Then I went here > "../spark-1.0.0/examples/src/main/scala/org/apache/spark/examples" created a > new directory "classes" and compiled SparkKMeans.scala with "scalac -d > classes/ SparkKMeans.scala" > Then I navigated to "classes" (I commented this line in the scala file : > package org.apache.spark.examples ) and tried to run it with "java -cp . > SparkKMeans" and I get the following error: > "Exception in thread "main" java.lang.NoClassDefFoundError: > breeze/linalg/Vector > at java.lang.Class.getDeclaredMethods0(Native Method) > at java.lang.Class.privateGetDeclaredMethods(Class.java:2531) > at java.lang.Class.getMethod0(Class.java:2774) > at java.lang.Class.getMethod(Class.java:1663) > at > sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494) > at > sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486) > Caused by: java.lang.ClassNotFoundException: breeze.linalg.Vector > at java.net.URLClassLoader$1.run(URLClassLoader.java:366) > at java.net.URLClassLoader$1.run(URLClassLoader.java:355) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:354) > at java.lang.ClassLoader.loadClass(ClassLoader.java:425) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) > at java.lang.ClassLoader.loadClass(ClassLoader.java:358) > ... 6 more > " > The jar under > "/home/wanda/spark-1.0.0/assembly/target/scala-2.10/spark-assembly-1.0.0-hadoop1.0.4.jar" > contains the breeze/linalg/Vector* path, I even tried to unpack it and put > it in CLASSPATH to it does not seem to pick it up > > > I am currently running java 1.8 > "java version "1.8.0_05" > Java(TM) SE Runtime Environment (build 1.8.0_05-b13) > Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)" > > What I am doing wrong ? >
