Staying in the MapR land, the question of comparing MapR to Cloudera is answered by people from all sides (MapR, Cloudera and Hortonworks). My summary: “cool proprietary technology addressing some of the current limitations of the Hadoop, but also missing some of the features the Hadoop community has come up with”.
This blog is called myNoSQL and it is written by me, Alex Popescu, a software architect with a passion for open source and communities.
It records my readings, learnings, and opinions on NoSQL databases, polyglot persistence, and distributed systems -- subjects that I'm passionate about.
The opinions expressed here are my own, and no other party necessarily agrees with them.
If you feel I'm biased, I probably am.