If you set your replication count to one and on each datanode, create 10 files, you will achieve the pattern you are trying for.
By default when a file is created on a machine hosting a datanode, that datanode will receive 1 replica of the file, and will be responsible for sending the file data to the next replica if any. On Thu, Oct 15, 2009 at 1:39 PM, Huang Qian <[email protected]> wrote: > Hi everyone. I am working on a project with hadoop and now I come across > some problem. How can I deploy 100 files, with each file have one block by > setting the blocksize and controling the file size, on to 10 datanode, and > make sure each datanode has 10 blocks. I know the file system can deploy > the > blocks automaticly, but I want to make sure for the assigns files, the > files > will be deployed well-proportioned. How can I make it by the hadoop tool or > api? > > Huang Qian（黄骞） > Institute of Remote Sensing and GIS,Peking University > Phone: (86-10) 5276-3109 > Mobile: (86) 1590-126-8883 > Address:Rm.554,Building 1,ChangChunXinYuan,Peking > Univ.,Beijing(100871),CHINA > -- Pro Hadoop, a book to guide you from beginner to hadoop mastery, http://www.amazon.com/dp/1430219424?tag=jewlerymall www.prohadoopbook.com a community for Hadoop Professionals
