Did you install HBase on top of local file system? If not, then if its running on HDFS, then do you have /home/aruna/hbase-1.2.4/hbasestorage in your HDFS? Usually HBase runs on HDFS and the location for root directory is /hbase or /hbase/data
Can you check master log for the exception (it usually located at /var/log/hbase or $HBASE_HOME/logs, depending on the way you installed HBase). It usually quite easy to understand why the service was stopped.
If you check the log for hbase as said by Sergey Soldatov, you may find the problem as connection refused due to mismatch in the port for the master. you can check it in the site http://wiki.apache.org/hadoop/ConnectionRefused, as mentioned in the log file, this might help