Q:

Datastax Amazon EC2 AMI - Store the same data in two different location against configuration

I have launched Amazon Datastax AMI - EC2(m3.medium) instance to run cassandra with following storage configuration. 
one root volume(instance store) - 8 GB.  one EBS-IOPS volume - 50 GB. 
I have mentioned data directory in cassandra.yaml as /mnt/cassandra/data. 
With the above configuration, I can run cassandra. 
My Problem is, When I create sample keyspace with table and its data,the data are stored in below two location
/var/lib/cassandra/data/ AND /mnt/cassandra/data
But in cassandra.yaml, I configured data directory should be on /mnt/cassandra/data. 
Could any one please help me to find out "Why data are stored in two different location?".  I would like to data must be present on my EBS volume only. 
Thanks

A:

Solved, symbolic link issue between /var/lib/cassandra/data/ and /mnt/cassandra/data folders

