Beginner Tips for Elastic MapReduce
By this point everyone is well acquainted with the power of Hadoops MapReduce. But what youre also probably well acquainted with is the pain that must be suffered when…
Querying More Fields != More Results – Stop wording and Dismax’s minimum should match argument
Let’s recall from Anatomy of a Dismax Query some key components of the dismax query parser: OK, now we’ve had plenty of time to study John’s post (and hey…
How to Debug Solr With Eclipse
Next Stop Debuggersville! Recently I was puzzled by some behavior Solr was showing me. I scratched my head and called over a colleague. We couldnt quite figure out what…
Modifying Solr Result Relevancy via an “Auxiliary Boost” Field
English is a confusing language. I mean, does it really make sense that you can park in a driveway or drive in a parkway? Also, Ive always been amused…
Beginners guide to enhancing Solr/Lucene search with Mahouts Machine Learning
Learn you some Mahout for great good! Yesterday, John and I gave a talk to the DC Hadoop Users Group about using Mahout with Solr to perform Latent Semantic…
Debugging “Wrong FS expected: file:///” exception from HDFS
I just spent some time putting together some basic Java code to read some data from HDFS. Pretty basic stuff. No map reduce involved. Pretty boilerplate code like the…
How cloud computing is revolutionizing pharma and genomics
Yesterday I attended an event hosted by Booz Allen/Amazon around Big Data and Cloud Computing for life sciences. It was a fascinating event that brought together folks from data…
Redesigning the SmallBizContracting Homepage
OSC came to me with an interesting task: To do a quick refresh of SmallBizContracting.com. The first thing that I did was to visit the site so that I…
Solr Unleashed – Mission Accomplished
This past Wednesday and Thursday (March 13th and 14th) OpenSource Connections held an on-site 2-day Solr training course called Solr Unleashed. We covered a broad range of Solr topics…
Visualizing StackOverflow Data: When Does Jon Skeet Answer Questions?
Last month we found the best time to ask a question on StackOverflow using the oft-missed ‘join’ feature in Solr. Numbers will get you far in isolating the top-performing…
Using Solrs New Atomic Updates
A while ago we created a sample index of US patent grants roughly 700k documents big. Adjacently we pulled down the corresponding multi-page TIFFs of those grants and made…
Getting started quickly with Hadoop and MapReduce
So heres the problem: Youve finally found a block of time to set down and get your head around Hadoop and MapReduce. You do a quick Google search for…