Month: March 2017

I’ve enrolled myself in “Algorithms, Part I” from Princeton University on Coursera.  I’ve put a hold on the textbook through my San Diego Public Library iOS app and expect it to be at my local branch by the weekend.  What a time we live in!

I hope to go all the way through the course and not get distracted by the many other topics which interest me.  Gotta stay on course!

It’s finally time for me to look into Hadoop a little more closely.

I cloned the Hadoop 2.7.3 repo and built it without too much difficulty.  I even got the daemon running locally in single node mode.  After running through a few of the examples, etc., I wondered what Amazon Web Services had to offer as far as running a Hadoop cluster goes.  That’s when I discovered Amazon EMR.  After looking into the documentation – which is as excellent as I expected from the Amazon folks – I decided I would run through their example and incur the $1.05 or so it would cost to bring up a cluster and play with it.  Hopefully another post will be forthcoming on the experience…

s2n is the new TLS/SSL implementation by Amazon.

I retrieved the git repository and tried to build it, only to have it crash while running a unit test.  I put some debugging statements in the test but they never showed up.  I was getting an “error 139” error and initial searches indicated it might have been a gcc problem.

Turns out, my stack was blowing up during initialization of an array and I needed to increase my stack size using “ulimit -s 16284”.  An interesting little problem for me since I haven’t worked in the C world for quite some time.