I spend lot of time tracking and monitoring Hadoop jobs running across multiple clusters in my current project. Typically I navigate around multiple Job tracker web admin consoles. Although the job tracker web console gives some basic system level statuses and metrics for Hadoop daemons, it leaves a lot to be desired. What’s missing is a monitoring platform at the application level. In my Hadoop job I may h ...

My last post was on location data query and indexing using MongoDB. Location data query and index support is an unique and powerful feature of MongoDB. Continuing along the same thread, I will dig into Map Reduce framework built right into MongoDB. Some NOSQL database systems provide built in map reduce framework. When the query engine is not enough for complex aggregate queries or other complex computation ...