We have just been made aware of an error in the Hadoop course, chapter 5, at approximately 19 minutes in the video. This error has been fixed in and the video was replaced on 22nd October - so this will only affect you if you downloaded chapter 5 before the 22nd October 2014. All customers can download the replacement video if preferred.
The issue relates to the part of the video that deals with setting your environment variables, and instructs you to edit either your .bashrc file (Linux) or .bash_profile (Mac)
There is a mistake in the last 2 lines that I ask you to add to these files - the lines reference the HADOOP_INSTALL variable - this should in fact reference HADOOP_PREFIX as we haven't set HADOOP_INSTALL.
The last 2 lines to be added should therefore be:
Please accept my apologies for this error. When I display my own .bashrc file (at about 20 minutes into the video) you'll see the correct information shown.