Tested. This one is really cool!!!
running pi job in my container env with ignite-hadoop only takes less than 8 secs!
time hadoop --config /etc/hadoop/ignite.client.conf jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar pi 100 100
Job Finished in 5.965 seconds
Estimated value of Pi is 3.14080000000000000000
While traditional MR spend 3M to complete the task.
Awesome! +1 on this, I'll commit.