Build Your Own Lucene Codec!
A Lucene Codec, a bit twiddlers dream! Ive been having a lot of fun hacking on a Lucene Codec lately. My hope is to create a Lucene storage layer…
Searching with hierarchical fields using Solr
In our recent and continuing effort to make the world a better place, we have been working with the illustrious Waldo Jaquith on a project called StateDecoded. Basically, were…
Deploying Elasticsearch to Amazon EC2 with Ansible
Over the past few weeks Ive been working with Elasticsearch. However, what I really have been missing is a good deployment system. Elasticsearch has a chef provisioning tutorial on…
What happened to CharStream/CharReader in Lucene?
A pretty subtle change happened in the transition from Lucene/Solr 3 to 4. The abstract method for CharFilterFactory changed from public CharStream create(CharStream input); to public abstract Reader create(Reader…
Introducing OSCAR! Search your notes no matter where they live!
In our daily adventures on our computers and the Internet, we often find/create notes or documents that we would like to keep for later, that we attempt to organize….
How does a search engine work? An educational trek through a Lucene Postings Format
Little did you know, Lucene stores its index on hundreds of Post-It Notes A new feature of Lucene 4 – pluggable codecs – allows for the modification of Lucene’s…
Initial Impressions of Elasticsearch – Flexible Open Source Distributed Search
I’m Jonathan Thompson, a rising 4th year CS major at UVA. This is my first blog post as an intern at OSC, I hope you enjoy it! \n\n While…
Search is Eating The World | Recap of Lucene Revolution
The team recently spent time at Lucene/Solr Revolution Much of the crew just got back from Lucene Revolution. It was an incredible experience to hang out with the cream-of-the-crop…
Indexing Millions of Documents using Tika and Atomic Update
On a recent engagement, we were posed with the problem of sorting through 6.5 million foreign patent documents and indexing them into Solr. This totaled about 1 TB of…
Understanding Solr Soft Commits and Data Durability
I ran into an interesting problem today. I was working with the first project where we legitimately needed Solr soft commits and in testing my configuration I wanted to…
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…