Hello dear forum, i am working on a project on apache Hadoop, i am totally new to this software and i need some help understanding the basic features!
To sum up, for my project i have configured hadoop so that it runs 3 datanodes on one machine. The project's main goal is, to use both Flickr API (flickr.com) libraries and hadoop libraries on Java, so that each one of the 3 datanodes, chooses a Flickr group and returns photos' info from that group. In order to do that, i have 3 flickr accounts, each one with a different api key. I dont need any help on the flickr side of the code, ofcourse. But what i dont understand, is how to use the Mapper and Reducer part of the code. What input do i have to give the Map() function? do i have to contain this whole "info downloading" process in the map() function? In a few words, how do i convert my code so that it runs distributedly on hadoop? thank u! -- View this message in context: http://old.nabble.com/Hadoop-project---help-needed-tp31741968p31741968.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
