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Posted to user@cassandra.apache.org by Andrew Cobley <a....@dundee.ac.uk> on 2013/07/22 10:06:58 UTC
Cassandra 2 vs Java 1.6
I know it was decided to drop the requirement for Java 1.6 for cassandra some time ago, but my question is should 2.0.0-beta1<http://www.apache.org/dyn/closer.cgi?path=/cassandra/2.0.0/apache-cassandra-2.0.0-beta1-bin.tar.gz> run under java 1.6 at all ? I tried and got the following error:
macaroon:bin administrator$ 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: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)
macaroon:bin administrator$ java -version
java version "1.6.0_43"
Java(TM) SE Runtime Environment (build 1.6.0_43-b01-447-10M4203)
Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01-447, mixed mode)
macaroon:bin administrator$
It's fine by me if thats the case !
Andy
The University of Dundee is a registered Scottish Charity, No: SC015096
RE: Cassandra 2 vs Java 1.6
Posted by Andrew Cobley <a....@dundee.ac.uk>.
Actually, it looks like it may not compile under 1.6 either. build.xml has the following:
<property name="source.version" value="1.7"/>
<property name="target.version" value="1.7"/>
BTW this came because I'm setting up a little test cluster on three spare mac computers in our labs. They haven't been updated for sometime and are running MacOs 10.6.8. Trying to install JDK 7u25 is a no go, only supported on 10.7.3.
It's not a major issue, just a warning that older Mac users may find this a problem.
Andy
________________________________________
From: Michał Michalski [michalm@opera.com]
Sent: 22 July 2013 09:14
To: user@cassandra.apache.org
Subject: Re: Cassandra 2 vs Java 1.6
I believe it won't run on 1.6. Java 1.7 is required to compile C* 2.0+
and once it's done, you cannot run it using Java 1.6 (this is what
"Unsupported major.minor version" error tells you about; java version 50
is 1.6 and 51 is 1.7).
M.
W dniu 22.07.2013 10:06, Andrew Cobley pisze:
> I know it was decided to drop the requirement for Java 1.6 for cassandra some time ago, but my question is should 2.0.0-beta1<http://www.apache.org/dyn/closer.cgi?path=/cassandra/2.0.0/apache-cassandra-2.0.0-beta1-bin.tar.gz> run under java 1.6 at all ? I tried and got the following error:
>
>
> macaroon:bin administrator$ 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: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)
>
> macaroon:bin administrator$ java -version
> java version "1.6.0_43"
> Java(TM) SE Runtime Environment (build 1.6.0_43-b01-447-10M4203)
> Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01-447, mixed mode)
> macaroon:bin administrator$
>
> It's fine by me if thats the case !
>
> Andy
>
>
> The University of Dundee is a registered Scottish Charity, No: SC015096
>
The University of Dundee is a registered Scottish Charity, No: SC015096
Re: Cassandra 2 vs Java 1.6
Posted by Michał Michalski <mi...@opera.com>.
I believe it won't run on 1.6. Java 1.7 is required to compile C* 2.0+
and once it's done, you cannot run it using Java 1.6 (this is what
"Unsupported major.minor version" error tells you about; java version 50
is 1.6 and 51 is 1.7).
M.
W dniu 22.07.2013 10:06, Andrew Cobley pisze:
> I know it was decided to drop the requirement for Java 1.6 for cassandra some time ago, but my question is should 2.0.0-beta1<http://www.apache.org/dyn/closer.cgi?path=/cassandra/2.0.0/apache-cassandra-2.0.0-beta1-bin.tar.gz> run under java 1.6 at all ? I tried and got the following error:
>
>
> macaroon:bin administrator$ 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: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)
>
> macaroon:bin administrator$ java -version
> java version "1.6.0_43"
> Java(TM) SE Runtime Environment (build 1.6.0_43-b01-447-10M4203)
> Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01-447, mixed mode)
> macaroon:bin administrator$
>
> It's fine by me if thats the case !
>
> Andy
>
>
> The University of Dundee is a registered Scottish Charity, No: SC015096
>