I found something while running the final task (Task 10) of HDPCD Practice Exam.
It says, "Put local files from /home/hortonworks/datasets/... into HDFS /user/hortonworks/..."
But, "/home" directory does not have "hortonworks", it has "horton" sub directory.
Also, user horton does not have permission to create any sub directory under "/home".
Similarly, on hdfs there is "/user/horton" not "/user/hortonworks" directory.
Not sure, whether the questions are incorrect or am I doing anything wrong ?
Also, please let me know how to access MySQL on HDPCD Practice exam instance ?
I tried "mysql -u root -p" with "hadoop" as password, but it did not work.