I have written my custom partitioner for partitioning datasets. I want to partition two datasets using the same partitioner and then in the next mapreduce job, I want each mapper to handle the same pa
I\'m trying to use Dumbo/Hadoop to calculate TF-IDF for a bunch of small text files using this example http://dumbotics.com/2009/05/17/tf-idf-revisited/
I have a massive amount of input data (that\'s why I use Hadoop) and there are multiple tasks that can be solved with various MapReduce steps of which the first mapper needs all the data as input.
I\'m working with a team of mine on a small application that takes a lot of input (logfiles of a day) and produces useful output after several (now 4, in the future perhaps 10) map-reduce steps (Hadoo
I\'m trying to implement the following graph reduction algorithm in The graph is an undirected weighted graph
I\'m trying to count the number of unique users per day on my java appengine app. I have decided to use the mapreduce framework (mapreduce.appspot.com) for java appengine to do this calculation offlin
I\'m beginning to learn some Hadoop/MapReduce, coming开发者_运维知识库 mostly from a PHP background, with a little bit of Java and Python.
Can we use a lotusscript function as a document selection routine inside view selection formula ? Here is my lotus function which determines the selection criteria
So using the regular MongoDB library in Ruby I have the following query to开发者_Python百科 find average filesize across a set of 5001 documents:
I am looking for a CouchDB equivalent to \"SQL joins\". In my example there are CouchDB documents that are list elements:
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