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Posted to dev@kafka.apache.org by "Jay Kreps (JIRA)" <ji...@apache.org> on 2013/07/03 05:52:21 UTC
[jira] [Commented] (KAFKA-893) Unable to access kafka via Tomcat
[ https://issues.apache.org/jira/browse/KAFKA-893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13698545#comment-13698545 ]
Jay Kreps commented on KAFKA-893:
---------------------------------
I think this happens if you have the wrong version of scala on your classpath.
> Unable to access kafka via Tomcat
> ---------------------------------
>
> Key: KAFKA-893
> URL: https://issues.apache.org/jira/browse/KAFKA-893
> Project: Kafka
> Issue Type: Bug
> Components: tools
> Environment: Apache Tomcat 7
> Reporter: arathi m
>
> Iam using kafka_2.8.0-0.8-SNAPSHOT.jar and Apache Tomcat 7. Upon deploying, the Consumer example (provided at Kafka quickstart) in a Tomcat web app, I get the following error
> java.lang.VerifyError: class scala.Tuple2$mcLL$sp overrides final method _1.()Ljava/lang/Object;
> java.lang.ClassLoader.defineClass1(Native Method)
> java.lang.ClassLoader.defineClass(ClassLoader.java:791)
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2888)
> org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1172)
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1558)
> kafka.consumer.ConsumerConfig.<init>(ConsumerConfig.scala:75)
> TestServlet.kafkaconsumer(TestServlet.java:44)
> TestServlet.doGet(TestServlet.java:20)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
> Please suggest what should be done to fix this error.
> Thanks in advance.
> Arathi
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