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https://issues.apache.org/jira/browse/KAFKA-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13597851#comment-13597851
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Bob commented on KAFKA-797:
---------------------------
Swapni,
Caveat, I am still new to the code but tracing through the code path, I found
that the exception is caused while trying to create an ephemeral node but
something isn't right because the ephemeral node is created in
ZkUtils.createEphemeralPathExpectConflict method, client.toString() shows the
node created as org.I0Itec.zkclient.ZkClient@e0d5eb7. However in the calling
ZookeeperLeaderElector.elect method, it threw e2 exception after calling
createEphemeralPathExpectConflict which passed!
Maybe you can shed some light on why this is happening.
Thanks,
Bob
> 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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