Hi, Not directly related to your problem, but...
Take a look at this project: http://incubator.apache.org/hama/ I'm not sure what stage it's in, but it's supposed to take care of some problems in the same domain. Regards, Cosmin On 9/22/08 4:55 PM, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: Hi, I need to use hbase to 1) store two sparse matrices. 2) Write a mapreduce program to multiply them. Problem 1: How do I create a table for sparse matrices in hbase and then pass it to a mapreduce application? Problem 2: The problem that I face is that the examples of mapper functions that I have seen - wordcount etc only look at one data item at a time and produce the key-value pair. How do I look at more than one item at a time to produce a key-value pair?
