ALL COVERED TOPICS

NoSQL Benchmarks NoSQL use cases NoSQL Videos NoSQL Hybrid Solutions NoSQL Presentations Big Data Hadoop MapReduce Pig Hive Flume Oozie Sqoop HDFS ZooKeeper Cascading Cascalog BigTable Cassandra HBase Hypertable Couchbase CouchDB MongoDB OrientDB RavenDB Jackrabbit Terrastore Amazon DynamoDB Redis Riak Project Voldemort Tokyo Cabinet Kyoto Cabinet memcached Amazon SimpleDB Datomic MemcacheDB M/DB GT.M Amazon Dynamo Dynomite Mnesia Yahoo! PNUTS/Sherpa Neo4j InfoGrid Sones GraphDB InfiniteGraph AllegroGraph MarkLogic Clustrix CouchDB Case Studies MongoDB Case Studies NoSQL at Adobe NoSQL at Facebook NoSQL at Twitter

NAVIGATE MAIN CATEGORIES

Close

MongoDB Map Reduce: Yet another tutorial

As the title says, this is yet-another-tutorial on Map Reduce using MongoDB. But two things that are different here:

  1. A problem solving approach is used, so we’ll take a problem, solve it in SQL first and then discuss Map Reduce.
  2. Lots of diagrams, so you’ll hopefully better understand how Map Reduce works.

If MapReduce still didn’t click, you could try this SQL to MongoDB MapReduce guide.

Original title and link: MongoDB Map Reduce: Yet another tutorial (NoSQL databases © myNoSQL)

via: http://blog.mongovue.com/2010/11/03/yet-another-mongodb-map-reduce-tutorial/