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  1. Samza
  2. SAMZA-752

"Hello Samza" Scala issues

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 0.9.1
    • Fix Version/s: None
    • Component/s: hello-samza
    • Labels:
      None
    • Environment:
      • CentOs 7 64-bit
      • apache-maven-3.3.3

      Description

      I am currently trying to run the Hello Samza example (http://samza.apache.org/startup/hello-samza/0.9/) and unfortunately when I try to run a Samza job I get the following exception:

      Command

      deploy/samza/bin/run-job.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/wikipedia-feed.properties 
      

      Exception

      ... 
      Error: A JNI error has occurred, please check your installation and try again 
      Exception in thread "main" java.lang.NoClassDefFoundError: scala/Function2 
      at java.lang.Class.getDeclaredMethods0(Native Method) 
      at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) 
      at java.lang.Class.privateGetMethodRecursive(Class.java:3048) 
      at java.lang.Class.getMethod0(Class.java:3018) 
      at java.lang.Class.getMethod(Class.java:1784) 
      at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544) 
      at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526) 
      Caused by: java.lang.ClassNotFoundException: scala.Function2 
      at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
      ... 7 more 
      

      If I edit vim deploy/samza/bin/run-class.sh and manually add the scala-library.jar to the CLASSPATH value, this error disappears, though the Hadoop Application will fail with a similarish exception (http://localhost:8088/).

      Error: A JNI error has occurred, please check your installation and try again
      Exception in thread "main" java.lang.NoClassDefFoundError: scala/collection/immutable/List
      	at java.lang.Class.getDeclaredMethods0(Native Method)
      	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
      	at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
      	at java.lang.Class.getMethod0(Class.java:3018)
      	at java.lang.Class.getMethod(Class.java:1784)
      	at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
      	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
      Caused by: java.lang.ClassNotFoundException: scala.collection.immutable.List
      	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
      	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
      	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
      	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
      	... 7 more
      

      The following links might be related:

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            • Assignee:
              Unassigned
              Reporter:
              marks1900 Mark S
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              Dates

              • Created:
                Updated: