Yakir Gibraltar created CASSANDRA-16279:
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             Summary: Incorrect check for -Xlog in cassandra-env.sh 
                 Key: CASSANDRA-16279
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16279
             Project: Cassandra
          Issue Type: Bug
            Reporter: Yakir Gibraltar


Possible small bug in {{cassandra-env.sh}} of Cassandra 4:
[https://github.com/apache/cassandra/blob/trunk/conf/cassandra-env.sh#L98]
The following command incorrect:
{{echo "$JVM_OPTS" | grep -q "^-[X]log:gc"}}
Should be:
{{echo "$JVM_OPTS" | grep -qe "-[X]log:gc"}}
The variable  {{$JVM_OPTS}} not starting with {{-Xlog..}}  , and always return 
1, remove {{^}} and add {{-qe}}  will solve the problem.
It's causing that {{cassandra-env.sh}}  ignoring variable of {{-Xlog}}  in 
{{jvm11-server.options}} and {{jvm8-server.options}}



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