# ACE Drill ```shell= [root@datafabric demo]# maprlogin password [Password for user 'root' at cluster 'my.cluster.com': ] MapR credentials of user 'root' for cluster 'my.cluster.com' are written to '/tmp/maprticket_0' [root@datafabric demo]# hadoop mfs -ls /mapr/my.cluster.com/demo/ Found 5 items -rw-r--r-- Z E U U 3 root root 0 2021-03-10 14:24 268435456 /mapr/my.cluster.com/demo/123 p 2176.35.131432 datafabric.hpe-taiwan-cic.net:5660 drwxr-xr-x Z E U U - root root 0 2021-03-09 23:07 268435456 /mapr/my.cluster.com/demo/1234 p 2176.34.131430 datafabric.hpe-taiwan-cic.net:5660 -rw-r--r-- Z E U U 3 root root 0 2021-03-11 15:59 268435456 /mapr/my.cluster.com/demo/12345 p 2176.36.131434 datafabric.hpe-taiwan-cic.net:5660 -rw-r--r-- Z E U U 3 root root 0 2021-03-09 23:00 268435456 /mapr/my.cluster.com/demo/aa p 2176.33.131428 datafabric.hpe-taiwan-cic.net:5660 -rw-r--r-- Z E U U 3 root root 177 2021-03-21 21:34 268435456 /mapr/my.cluster.com/demo/employee.json p 2176.40.131442 datafabric.hpe-taiwan-cic.net:5660 [root@datafabric demo]# hadoop mfs -setace -aces "rf:u:root" /mapr/my.cluster.com/demo/employee.json [root@datafabric demo]# hadoop mfs -ls /mapr/my.cluster.com/demo/ Found 5 items -rw-r--r-- Z E U U 3 root root 0 2021-03-10 14:24 268435456 /mapr/my.cluster.com/demo/123 p 2176.35.131432 datafabric.hpe-taiwan-cic.net:5660 drwxr-xr-x Z E U U - root root 0 2021-03-09 23:07 268435456 /mapr/my.cluster.com/demo/1234 p 2176.34.131430 datafabric.hpe-taiwan-cic.net:5660 -rw-r--r-- Z E U U 3 root root 0 2021-03-11 15:59 268435456 /mapr/my.cluster.com/demo/12345 p 2176.36.131434 datafabric.hpe-taiwan-cic.net:5660 -rw-r--r-- Z E U U 3 root root 0 2021-03-09 23:00 268435456 /mapr/my.cluster.com/demo/aa p 2176.33.131428 datafabric.hpe-taiwan-cic.net:5660 -r--------+ Z E U U 3 root root 177 2021-03-21 21:34 268435456 /mapr/my.cluster.com/demo/employee.json p 2176.40.131442 datafabric.hpe-taiwan-cic.net:5660 [root@datafabric demo]# ``` ```shell= SELECT * FROM dfs.`/demo/employee.json` LIMIT 20 ``` ## User: root ![](https://i.imgur.com/SCWOGfZ.png) ## User: demo-hpe ![](https://i.imgur.com/oTAqDxm.png)