Hello Masoud, Did you look at sqoop (http://sqoop.apache.org)? Maybe it can help you.
I think there also is a specific FileInputFormat designed for databases. I don't remember the name. If you use it, you need just write a mapper. Guillaume Polaert | Cyrès Conseil -----Message d'origine----- De : Masoud [mailto:mas...@agape.hanyang.ac.kr] Envoyé : lundi 18 février 2013 12:20 À : common-user@hadoop.apache.org Objet : Database insertion by HAdoop Dear All, We are going to do our experiment of a scientific papers, ] We must insert data in our database for later consideration, it almost 300 tables each one has 2/000/000 records. as you know It takes lots of time to do it with a single machine, we are going to use our Hadoop cluster (32 machines) and divide 300 insertion tasks between them, I need some hint to progress faster, 1- as i know we dont need to Reduser, just Mapper in enough. 2- so wee need just implement Mapper class with needed code. Please let me know if there is any point, Best Regards Masoud
