I\'m somewhat confused with the current state of mapreduce support in GAE. According to the docs http://code.google.com/p/appengine-mapreduce/ reduce phase isn\'t supported yet, but in the description
In my application I want to create as many reducer jobs as possible based on the keys. Now my current implementation writes all the keys and values in a single (reducer) output file. So to solve this,
I\'ve been playing around with Couchbase Server and now just tried replicating my local db to Cloudant, but am getting conflicting results for my map/reduce function pair to build a set of unique tags
I need to do a MapReduce application in Java, that need to be auto-recursive, that means for each line of input file processed it must check all the lines of the input/Map entries for a condition, ve
I\'m using hadoop to update some records in a mysql db... The issue that I\'m seeing is that in certain cases, multiple reducers are launched for the same key set.
I am having problem getting map/reduce example to work on cygwin: http://www.michael-noll.com/tutorials/writing-an-hadoop-mapreduce-program-in-python/
I have a file, which contains IP packet headers in text format. After the map function, each reduce method is called for a particular IP address. I wan开发者_开发知识库t the values in a sorted order,
I have a collection of things, each thing has some user reviews and each review has a numeric (1-5) rating. I would like to periodically run a batch job that will calculate the average rating for each
I created a small test database in CouchDB and I\'m creating a temporary view in Futon. I wrote the mapper and the reducer. The mapper works, but the check box for the reducer never shows up. I know t
To avoid the overhead of setting up instances everytime I submit a job, I use a jobflow that\'s always in waiting mode after each job completion.However, according to this page, \"a maximum of 256 ste
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