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https://issues.apache.org/jira/browse/KAFKA-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598074#comment-13598074
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Swapnil Ghike commented on KAFKA-797:
-------------------------------------
Bob, yes, if you cloned the repo two days ago, then you should have trunk HEAD.
The 0.8 branch contains one more Zk related change and some other additional
bug fixes. Trunk is where we are developing for post 0.8 changes, and we
periodically merge any changes in 0.8 to trunk.
The case for None should take care of null because null converted to an Option
is None. If the problem persists on the 0.8 branch without your local fix, can
you please file a separate JIRA for it? It may be a bug. Thanks.
> 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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