Hi, The file system object will contain the scheme, authority etc for the given uri or path. The conf object acts as reference ( unable to get a better terminology ) to this info. Looking at the MapFileOutputFormat should help provide better understanding as to how writers and readers are initialized.
Hope this helps, Amogh On 4/13/10 7:33 PM, "Placebo" <[email protected]> wrote: I have a large text file, approximately 500mb containing key value pairs on each line. I would like to implement Hadoop MapFile so that I can access any key,value pair fairly quickly. To construct either the Reader or Writer the MapFile requires a Configurations object and a File System object. I am confused as to how to create either object, and why they are necessary. Would someone be so kind to demonstrate to me a trivial example as to how I can accomplish this. Thanks in advance. -- View this message in context: http://old.nabble.com/How-do-I-use-MapFile-Reader-and-Writer-tp28230683p28230683.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
