A Smooth Sea Never Made a Skillful Sailor

This post is all about gadget envy. I just picked up a pair of bluetooth headphones following a Lifehacker deals post a few days ago. Here's the link to the post. I am by no means an audiophile, however, I was against getting bluetooth headphones for a long while. Recently, it dawned on me that BT headset is the only way to go for me when for the nth time my headphones stopped working in one ear. This deal is great and you may still have time to pick these up. Originally they're $80 and after a $50 off coupon provided at the link, these headphones are a steal for $30. They use the old 2.1 A2DP protocol but so far I haven't had any glaring issues with performance. Off the bat, the fit is very comfortable, something I've had issues with before with over the ear headphones. These do not snug tightly and don't make me feel like my head is in a vice. They come with a nice hard case, included is a 3.5mm cable and use the headphones just like any other wired set or use BT...

I was trying to execute some run-of-the-mill Mapreduce against HBase on a development cluster running HDP 2.1 and discovered some gotchas going from HDP 2.0 to HDP 2.1. For the unaware, HDP 2.0 stack is Hadoop 2.2.0 and HBase 0.96.0 and HDP 2.1 is Hadoop 2.4.0 and HBase 0.98.0. The stack I used was 2.1.3.0 and then desperately upgraded to the brand-new 2.1.4.0 stack with YARN bug fixes. Spoiler, that did not solve the actual problem. On a side-note, there's a lot of "coincidental" advice out-there and I was not able to fix my issues on following this link http://www.srccodes.com/p/article/46/noclassdeffounderror-org-apache-hadoop-service-compositeservice-shell-exitcodeexception-classnotfoundexception. This article did however put me on the right path, I went to the nodemanager where the failing task attempt executed and looked up the "real" error. The problem was class not found for one library that was moved from hadoop-common Maven artifact to hadoop-yarn-comm...