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Gimme all resources you have – I can use them!

Gimme all resources you have – I can use them!

Exploiting full IO and CPU concurrency when indexing with Apache Lucene During the last year Apache Lucene has been improved an extreme amount with outstanding improvements such as 100 times faster FuzzyQueries, new Term-Dictionary implementation, enhanced Segment-Merging and the famous Flexible-Indexing API. Recently I started working on another fundamental change referred to as DocumentsWriterPerThread, an […]

Debugging the dreaded “SEVERE: Error listenerStart” and “SEVERE: Error filterStart” tomcat error messages

Just a quick post that I hope might benefit others. If you have been developing web applications on tomcat for a while you have likely come the two error messages mentioned in the title. SEVERE: Error listenerStart Occurs when an exception is thrown in the contextInitialized method of a ServletContextListener SEVERE: Error filterStart Occurs when an […]

Mahout at FOSDEM 2011 DataDevRoom

Last saturday, february 5th, FOSDEM 2011 hosted the DataDevRoom where talks were given on topics surrounding data analysis with free and open source software. I was there and gave an introductory talk on clustering with Apache Mahout. In case you missed the conference, read on to learn about some of the talks or checkout the […]