Skip to main content

What's the New York Times Doing with Hadoop?

Interesting yet very brief interview on what the New York Times is doing with Hadoop. It's always fascinating to me to read about the tools and approaches people use with the level of scalability most of us don't have to worry about. Also interesting to me is the MapReduce functionality in Hadoop since it's the same idea used by CouchDB views, and I'm absolutely loving the bit of work I've been doing with CouchDB.

Comments

cfwhisperer said…
Matt this is all very fascinating to me I got interested at the O'Reilly Velocity Conference in San Jose. I have to discipline myself and dedicate time to completing build-out of our LA lab I am intrigued to at least get rolling with CouchDB. We are also looking closely at aiCache which is a web acceleration product, thanks for the pointer.
Matthew Woodward said…
Thanks DrQz--great info.
DrQz said…
Welcome. BTW, the functional part is not all that difficult either. Just think of EVERYTHING (including a '+' operator) as function or procedure with args as inputs and returns as outputs. The main difference from procedural languages, like C or Java, is that the output of one function can be the input to another function ... a LISP-ism.Here's an example in Mathematica:In[1]:= Times[Plus[a, b], c] produces: Out[1]:= (a + b) cwhich is what a mathemagician would've written in the first place (the multiply being implicit in math). If 'a' and 'b' are given numerical values, you'd get a single number as the output. MMA can do either numbers or symbols.From a programming standpoint, you see the 'a' and 'b' are args into the function Plus and it's output (together with the input 'c') is an input into the function Times.This example is pedestrian but it generalizes into some very cool and powerful constructs that can be written with relatively little code. For example:1. A Quine (code that reproduces itself):Print[# 1,FromCharacterCode[91], #1,FromCharacterCode[93]]&[Print[#1,FromCharacterCode[91], #1,FromCharacterCode[93]]&]2. Sequence generator using recursion:Nest[Join[ # , ReplacePart[ # , Length[ # ] -> Last[ # ] + 1]] &, {0, 1}, 5] See http://www.research.att.com/~njas/sequences/A007814 (bottom of page).
DrQz said…
With respect to how Hadoop/MR might be getting applied at NYT, here's a video of an ACM talk (http://www.sfbayacm.org/?p=88) that I attended recently, about how Google.com is actually using MR in their AdSense group (i.e., where the action is). http://fora.tv/2009/08/12/Josh_Herbach_PLANET_MapReduce_and_Tree_LearningThe MR slide appears @ 00:37:37 approx.This presentation also provides a quick overview of the whole schmeer related to Biz Analytics and DM. Hard to find, otherwise.

Popular posts from this blog

Installing and Configuring NextPVR as a Replacement for Windows Media Center

If you follow me on Google+ you'll know I had a recent rant about Windows Media Center, which after running fine for about a year suddenly decided as of January 29 it was done downloading the program guide and by extension was therefore done recording any TV shows.

I'll spare you more ranting and simply say that none of the suggestions I got (which I appreciate!) worked, and rather than spending more time figuring out why, I decided to try something different.

NextPVR is an awesome free (as in beer, not as in freedom unfortunately ...) PVR application for Windows that with a little bit of tweaking handily replaced Windows Media Center. It can even download guide data, which is apparently something WMC no longer feels like doing.

Background I wound up going down this road in a rather circuitous way. My initial goal for the weekend project was to get Raspbmc running on one of my Raspberry Pis. The latest version of XBMC has PVR functionality so I was anxious to try that out as a …

Setting Up Django On a Raspberry Pi

This past weekend I finally got a chance to set up one of my two Raspberry Pis to use as a Django server so I thought I'd share the steps I went through both to save someone else attempting to do this some time as well as get any feedback in case there are different/better ways to do any of this.

I'm running this from my house (URL forthcoming once I get the real Django app finalized and put on the Raspberry Pi) using dyndns.org. I don't cover that aspect of things in this post but I'm happy to write that up as well if people are interested.

General Comments and Assumptions

Using latest Raspbian “wheezy” distro as of 1/19/2013 (http://www.raspberrypi.org/downloads)We’lll be using Nginx (http://nginx.org) as the web server/proxy and Gunicorn (http://gunicorn.org) as the WSGI serverI used http://www.apreche.net/complete-single-server-django-stack-tutorial/ heavily as I was creating this, so many thanks to the author of that tutorial. If you’re looking for more details on …

The Definitive Guide to CouchDB Authentication and Security

With a bold title like that I suppose I should clarify a bit. I finally got frustrated enough with all the disparate and seemingly incomplete information on this topic to want to gather everything I know about this topic into a single place, both so I have it for my own reference but also in the hopes that it will help others.Since CouchDB is just an HTTP resource and can be secured at that level along the same lines as you'd secure any HTTP resource, I should also point out that I will not be covering things like putting a proxy in front of CouchDB, using SSL with CouchDB, or anything along those lines. This post is strictly limited to how authentication and security work within CouchDB itself.CouchDB security is powerful and granular but frankly it's also a bit quirky and counterintuitive. What I'm outlining here is my understanding of all of this after taking several runs at it, reading everything I could find on the Internet (yes, the whole Internet!), and a great deal…