[ https://issues.apache.org/jira/browse/KAFKA-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599011#comment-13599011 ]

David Arthur commented on KAFKA-797:
------------------------------------

Neha,

That's correct. My project dir has:

Build.scala        build.properties    project
build            plugins.sbt        target

but no boot
                
> Cannot start Kafka 0.8 per Quick Start instructions
> ---------------------------------------------------
>
>                 Key: KAFKA-797
>                 URL: https://issues.apache.org/jira/browse/KAFKA-797
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: David Arthur
>
> Checked out latest 0.8 (b5edbb193b33ebf0b3056935a537967ff21478a6), and ran:
> ./sbt update
> ./sbt package
> Both complete successfully. Then I try to start the server:
> $ ./bin/kafka-server-start.sh config/server.properties
> Exception in thread "main" java.lang.NoClassDefFoundError: scala/ScalaObject
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at kafka.Kafka.main(Kafka.scala)
> Caused by: java.lang.ClassNotFoundException: scala.ScalaObject
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 25 more

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    [ https://issues.apache.org/jira/browse/KAFKA-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13601691#comment-13601691 ]

Dave DeMaagd commented on KAFKA-797:
------------------------------------

KAFKA-733 is already out there for the assembly stuff, though there was some question about the conflict handling.
                
> Cannot start Kafka 0.8 per Quick Start instructions
> ---------------------------------------------------
>
>                 Key: KAFKA-797
>                 URL: https://issues.apache.org/jira/browse/KAFKA-797
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: David Arthur
>
> Checked out latest 0.8 (b5edbb193b33ebf0b3056935a537967ff21478a6), and ran:
> ./sbt update
> ./sbt package
> Both complete successfully. Then I try to start the server:
> $ ./bin/kafka-server-start.sh config/server.properties
> Exception in thread "main" java.lang.NoClassDefFoundError: scala/ScalaObject
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at kafka.Kafka.main(Kafka.scala)
> Caused by: java.lang.ClassNotFoundException: scala.ScalaObject
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 25 more

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David Arthur commented on KAFKA-797:
------------------------------------

Not sure if anything actually changed, but this works for me now. For me, it turned out to be an issue with SBT and Ivy. I cleared ~/.ivy2/cache/org.scala* and ~/.ivy2/cache/scala* and things started working again.
                
> Cannot start Kafka 0.8 per Quick Start instructions
> ---------------------------------------------------
>
>                 Key: KAFKA-797
>                 URL: https://issues.apache.org/jira/browse/KAFKA-797
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: David Arthur
>
> Checked out latest 0.8 (b5edbb193b33ebf0b3056935a537967ff21478a6), and ran:
> ./sbt update
> ./sbt package
> Both complete successfully. Then I try to start the server:
> $ ./bin/kafka-server-start.sh config/server.properties
> Exception in thread "main" java.lang.NoClassDefFoundError: scala/ScalaObject
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at kafka.Kafka.main(Kafka.scala)
> Caused by: java.lang.ClassNotFoundException: scala.ScalaObject
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 25 more

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