Paul Bayliss created CASSANDRA-11832:
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             Summary: Cassandra 2.1x and 2.2.x does not start with java 7u101
                 Key: CASSANDRA-11832
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11832
             Project: Cassandra
          Issue Type: Bug
          Components: Lifecycle
         Environment: Linux xxxxxx 3.13.0-63-generic #103-Ubuntu SMP Fri Aug 14 
21:42:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Java version 1.7.0.101
            Reporter: Paul Bayliss


Cassandra returns the error 'Cassandra 2.0 and later require Java 7u25 or 
later.' when run using java 7 versions greater than 7u101. This is due to using 
string comparisons for the versions in the cassandra-env.sh file.

The current cassandra-env.sh script contains the following code which uses 
string comparisons (I.e. 101 is less than 25 if you compare as strings)

if [ "$JVM_VERSION" \< "1.8" ] && [ "$JVM_PATCH_VERSION" \< "25" ] ; then       
                                                                                
                                                                               
    echo "Cassandra 2.0 and later require Java 7u25 or later."                  
                                                                                
                                                                                
    exit 1;                                                                     
                                                                                
                                                                                
fi 

To properly handle the numeric version comparison the -lt operator should be 
used. For example

if [ "$JVM_VERSION" \< "1.8" ] && [ "$JVM_PATCH_VERSION" -lt "25" ] ; then      
                                                                                
                                                                                
    echo "Cassandra 2.0 and later require Java 7u25 or later."                  
                                                                                
                                                                                
    exit 1;                                                                     
                                                                                
                                                                                
fi



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