[jira] [Created] (CASSANDRA-7137) Check for Java >= 1.7 in bin/cassandra

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

Tyler Hobbs created CASSANDRA-7137:
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             Summary: Check for Java >= 1.7 in bin/cassandra
                 Key: CASSANDRA-7137
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7137
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Tyler Hobbs
            Priority: Minor
             Fix For: 2.0.8


Since we don't currently check for a Java version >= 1.7 but use flags that were introduced in 1.7, you can get cryptic error messages when starting Cassandra with 1.6.  For example:

{noformat}
~/cassandra $ JAVA_HOME=/usr/lib/jvm/java-6-sun-1.6.0.26/ bin/cassandra -f
Unrecognized VM option 'StringTableSize=1000003'
Could not create the Java virtual machine.
{noformat}

We had some code in 1.2 to detect the java version and change flags depending on that, so that would be a good starting point: https://github.com/apache/cassandra/blob/cassandra-1.2/conf/cassandra-env.sh#L209



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