Lack of field-level updates in Lucene has been a long-standing issue. I'm going to present several interesting applications that use the Lucene 4 Codec API, mainly a design and implementation of updateable fields and also examples of online index filtering and mirroring of index data using codecs, and an implementation of a single-pass index splitter.

More info: berlinbuzzwords.de/sessions/updateable-fields-and-other-fun-codec-api

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