Ubuntu 12.04 and cassandra install - +HeapDumpOnOutOfMemoryError -Xss128k

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I am following the instructions for installing cassandra at Install Cassandra

When I installed, I get the below. How to I fix?

service cassandra start
xss =  -ea -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms1001M -Xmx1001M -Xmn100M -XX:+HeapDumpOnOutOfMemoryError -Xss128k

root@i-157-16647-VM:~# service cassandra status
xss =  -ea -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms1001M -Xmx1001M -Xmn100M -XX:+HeapDumpOnOutOfMemoryError -Xss128k
 * Cassandra is not running

I am running on a machine with 2 gigs of RAM. Here is how I install on a bare bones VM.

sudo vi /etc/apt/sources.list
#add sources.list
     deb http://debian.datastax.com/community stable main
     deb http://us.archive.ubuntu.com/ubuntu/ precise main contrib non-free

curl -L http://debian.datastax.com/debian/repo_key | sudo apt-key add -
sudo apt-get update
sudo apt-get install python-cql dsc1.1


root@i-157-16647-VM:~# java -version
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.3) (6b24-1.11.3-1ubuntu0.12.04.1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)

/var/log/cassandra/output.log
Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: i-157-16647-VM: i-157-16647-VM
Service exit with a return value of 1
Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: i-157-16647-VM: i-157-16647-VM
Service exit with a return value of 1
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