Java.lang.UnsupportedClassVersionError: org/elasticsearch/ElasticsearchException : Unsupported major.minor version 51.0

Hi,

I have jdk1.7.0_75 in linux and elasticsearch server 1.4.1, but while
starting my jboss server i am getting below exception. I am able to run
elasticsearch server using same version. Any body knows what is java
compatible version for elastic search 1.4.1.

java.lang.UnsupportedClassVersionError:
org/elasticsearch/ElasticsearchException : Unsupported major.minor version
51.0

I do not have version 51 anywhere in my system, please advice

Thanks,
Vijaya

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Even though you have installed java7, it sounds like your JAVA_HOME is set to java6...

Check your config.

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David :wink:
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs

Le 27 mars 2015 à 07:56, Vijayakumari B N vijayakumari.bn@gmail.com a écrit :

Hi,

I have jdk1.7.0_75 in linux and elasticsearch server 1.4.1, but while starting my jboss server i am getting below exception. I am able to run elasticsearch server using same version. Any body knows what is java compatible version for elastic search 1.4.1.

java.lang.UnsupportedClassVersionError: org/elasticsearch/ElasticsearchException : Unsupported major.minor version 51.0

I do not have version 51 anywhere in my system, please advice

Thanks,
Vijaya

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Double check you are using JDK 1.7 or higher for your Elastic/JBoss combination.

It looks like you are using JDK 1.6 - the exception indicates that the Java runtime doesn't recognize the bytecode
version (51.0 stands for Java 7 class files [1]).

The class files major versions are:

Java 8 = 52, Java 7 = 51, Java 6 = 50, Java 5 = 49

[1] http://en.wikipedia.org/wiki/Java_class_file

On 3/27/15 8:56 AM, Vijayakumari B N wrote:

Hi,

I have jdk1.7.0_75 in linux and elasticsearch server 1.4.1, but while starting my jboss server i am getting below
exception. I am able to run elasticsearch server using same version. Any body knows what is java compatible version for
elastic search 1.4.1.

java.lang.UnsupportedClassVersionError: org/elasticsearch/ElasticsearchException : Unsupported major.minor version 51.0

I do not have version 51 anywhere in my system, please advice

Thanks,
Vijaya

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