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From Jason Wee <peich...@gmail.com>
Subject Re: Unsupported major.minor version 51.0
Date Wed, 18 Sep 2013 03:24:41 GMT
cassandra 2.0, then use oracle or open jdk version 7.

Jason


On Wed, Sep 18, 2013 at 11:21 AM, Gary Zhao <garyzhao@gmail.com> wrote:

> Hello
>
> I just saw this error. Anyone knows how to fix it?
>
> [root@gary-vm1 apache-cassandra-2.0.0]# bin/cassandra -f
> xss =  -ea -javaagent:bin/../lib/jamm-0.2.5.jar -XX:+UseThreadPriorities
> -XX:ThreadPriorityPolicy=42 -Xms4014M -Xmx4014M -Xmn400M
> -XX:+HeapDumpOnOutOfMemoryError -Xss180k
> Exception in thread "main" java.lang.UnsupportedClassVersionError:
> org/apache/cassandra/service/CassandraDaemon : Unsupported major.minor
> version 51.0
> at java.lang.ClassLoader.defineClass1(Native Method)
>  at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
>  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$1.run(URLClassLoader.java:197)
>  at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> Could not find the main class:
> org.apache.cassandra.service.CassandraDaemon.  Program will exit.
> [root@gary-vm1 apache-cassandra-2.0.0]# java -version
> java version "1.6.0_24"
> Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
> Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)
>
> Thanks
> Gary
>

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