Cassandra error "Could not create the Java Virtual Machine"

Question

I'm new to Cassandra. Followed this link http://www.datastax.com/documentation/cassandra/2.0/webhelp/index.html#cassandra/install/installDeb_t.html to install Cassandra in Ubuntu virtual box of 1GB RAM. Output of `cassandra -f`: ``` xss = -ea -javaagent:/usr/share/cassandra/lib/jamm-0.2.5.jar -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms501M -Xmx501M -Xmn100M -XX:+HeapDumpOnOutOfMemoryError -Xss256k Unrecognized VM option 'UseCondCardMark' Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. ``` Here, it shows `out of memory` error and it would be reason for not creating JVM. Can you please help on resolving this issue. Thanks for any help. cassandra-env.sh file: ``` # Per-thread stack size. JVM_OPTS="$JVM_OPTS -Xss1500k" echo "xss = $JVM_OPTS" ```

Accepted Answer

Remove

```
if [ "$JVM_VERSION" \> "1.7" ] ; then
    JVM_OPTS="$JVM_OPTS -XX:+UseCondCardMark"
fi
```

from your cassandra-env.sh.

Cassandra error "Could not create the Java Virtual Machine"

Solution

Problem