MapR Sandbox for Hadoop Learning

I got email about MapR Sandbox, that is a fully functional Hadoop cluster running on a virtual machine (CentOS 6.5) that provides an intuitive web interface for both developers and administrators to get started with Hadoop. I belief it's a good idea to learn about Hadoop and its ecosystem. Users can download for VMware VM or VirtualBox. I downloaded for VirtualBox and imported it. I changed about network to use "Bridged Adapter". After started... I connected it http://ip-address:8443

Then, I selected "Launch HUE" and "Launch MCS", but got some error and fixed.
Finally,  I could use HUE and MCS.

Hue is an interface for interacting with web applications that access the MapR File System (MapR-FS). Use the applications in HUE to access MapR-FS, work with tables, run Hive queries, MapReduce jobs, and Oozie workflows.

The MapR Control System (MCS) is a graphical, programmatic control panel for cluster administration that provides complete cluster monitoring functionality and most of the functionality of the command line.

After reviewing MapR Sandbox for VirtualBox, "maprdev" account is development account that can sudo to be root.

login as: maprdev
Server refused our key
Using keyboard-interactive authentication.
Password:
Welcome to your Mapr Demo virtual machine.
[maprdev@maprdemo ~]$ sudo -l
Matching Defaults entries for maprdev on this host:
    !visiblepw, always_set_home, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG
    LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE",
    env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin
User maprdev may run the following commands on this host:
    (ALL) NOPASSWD: ALL
[maprdev@maprdemo ~]$
[maprdev@maprdemo ~]$ sudo showmount -e localhost
Export list for localhost:
/mapr                *
/mapr/my.cluster.com *
[maprdev@maprdemo ~]$

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