Jeremiah Jordan created CASSANDRA-5319:
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             Summary: Add new GC Log Rotation options to cassandra-env.sh
                 Key: CASSANDRA-5319
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5319
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Jeremiah Jordan
            Priority: Trivial


JDK u34 and later added built in GC log rotation:
http://www.oracle.com/technetwork/java/javase/2col/6u34-bugfixes-1733379.html
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6941923

1) -XX:+UseGCLogRotation                       must be used with 
-Xloggc:<filename>
2) -XX:NumberOfGClogFiles=<number of files>    must be >=1, default is one
3) -XX:GCLogFileSize=<number>M (or K)          default will be set to 512K

if UseGCLogRotation set and -Xloggc gives file name, do Log rotation, depends 
on other flag settings.
if NumberOfGClogFiles = 1, using same file, rotate log when reaches file 
capicity (set by GCLogFileSize) in <filename>.0
if NumberOfGClogFiles > 1, rotate between files <filename>.0, <filename>.1, 
..., <filename>.n-1

We should add these to the commented out gc logging options in cassandra-env.sh

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